EN 301 549 V3.2.1 (2021-03)
HARMONISED EUROPEAN STANDARD
Accessibility requirements for ICT products and services
ETSI CEN CENELEC
2
EN 301 549 V3.2.1 (2021-03)
Reference
REN/HF-00301549v321
Keywords
accessibility, HF, ICT, procurement
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Contents
Contents .............................................................................................................................................................. 3
Intellectual Property Rights ................................................................................................................................ 8
Foreword............................................................................................................................................................. 8
Modal verbs terminology ................................................................................................................................... 9
Introduction ........................................................................................................................................................ 9
1 Scope ...................................................................................................................................................... 11
2 References .............................................................................................................................................. 11
2.1 Normative references ....................................................................................................................................... 11
2.2 Informative references ..................................................................................................................................... 12
3 Definition of terms, symbols and abbreviations ..................................................................................... 15
3.1 Terms ............................................................................................................................................................... 15
3.2 Symbols ........................................................................................................................................................... 19
3.3 Abbreviations ................................................................................................................................................... 19
4 Functional performance .......................................................................................................................... 20
4.1 Meeting functional performance statements .................................................................................................... 20
4.2 Functional performance statements ................................................................................................................. 20
4.2.1 Usage without vision .................................................................................................................................. 20
4.2.2 Usage with limited vision ........................................................................................................................... 20
4.2.3 Usage without perception of colour ........................................................................................................... 21
4.2.4 Usage without hearing ................................................................................................................................ 21
4.2.5 Usage with limited hearing ........................................................................................................................ 21
4.2.6 Usage with no or limited vocal capability .................................................................................................. 21
4.2.7 Usage with limited manipulation or strength ............................................................................................. 21
4.2.8 Usage with limited reach ............................................................................................................................ 22
4.2.9 Minimize photosensitive seizure triggers ................................................................................................... 22
4.2.10 Usage with limited cognition, language or learning ................................................................................... 22
4.2.11 Privacy ....................................................................................................................................................... 22
5 Generic requirements ............................................................................................................................. 23
5.1 Closed functionality ......................................................................................................................................... 23
5.1.1 Introduction (informative) .......................................................................................................................... 23
5.1.2 General ....................................................................................................................................................... 23
5.1.3 Non-visual access ....................................................................................................................................... 23
5.1.4 Functionality closed to text enlargement .................................................................................................... 26
5.1.5 Visual output for auditory information....................................................................................................... 27
5.1.6 Operation without keyboard interface ........................................................................................................ 27
5.1.7 Access without speech ............................................................................................................................... 28
5.2 Activation of accessibility features .................................................................................................................. 28
5.3 Biometrics ........................................................................................................................................................ 28
5.4 Preservation of accessibility information during conversion ........................................................................... 28
5.5 Operable parts .................................................................................................................................................. 28
5.5.1 Means of operation ..................................................................................................................................... 28
5.5.2 Operable parts discernibility ...................................................................................................................... 28
5.6 Locking or toggle controls ............................................................................................................................... 29
5.6.1 Tactile or auditory status ............................................................................................................................ 29
5.6.2 Visual status ............................................................................................................................................... 29
5.7 Key repeat ........................................................................................................................................................ 29
5.8 Double-strike key acceptance .......................................................................................................................... 29
5.9 Simultaneous user actions ................................................................................................................................ 29
6 ICT with two-way voice communication ............................................................................................... 30
6.1 Audio bandwidth for speech ............................................................................................................................ 30
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6.2 Real-Time Text (RTT) functionality ............................................................................................................... 30
6.2.1 RTT provision ............................................................................................................................................ 30
6.2.2 Display of RTT .......................................................................................................................................... 31
6.2.3 Interoperability ........................................................................................................................................... 31
6.2.4 RTT responsiveness ................................................................................................................................... 32
6.3 Caller ID .......................................................................................................................................................... 32
6.4 Alternatives to voice-based services ................................................................................................................ 32
6.5 Video communication ...................................................................................................................................... 33
6.5.1 General (informative) ................................................................................................................................. 33
6.5.2 Resolution .................................................................................................................................................. 33
6.5.3 Frame rate .................................................................................................................................................. 33
6.5.4 Synchronization between audio and video ................................................................................................. 33
6.5.5 Visual indicator of audio with video .......................................................................................................... 33
6.5.6 Speaker identification with video (sign language) communication............................................................ 34
6.6 Alternatives to video-based services ................................................................................................................ 34
7 ICT with video capabilities .................................................................................................................... 35
7.1 Caption processing technology ........................................................................................................................ 35
7.1.1 Captioning playback ................................................................................................................................... 35
7.1.2 Captioning synchronization ........................................................................................................................ 35
7.1.3 Preservation of captioning .......................................................................................................................... 35
7.1.4 Captions characteristics .............................................................................................................................. 35
7.1.5 Spoken subtitles ......................................................................................................................................... 35
7.2 Audio description technology .......................................................................................................................... 36
7.2.1 Audio description playback ........................................................................................................................ 36
7.2.2 Audio description synchronization ............................................................................................................. 36
7.2.3 Preservation of audio description ............................................................................................................... 36
7.3 User controls for captions and audio description ............................................................................................. 36
8 Hardware ................................................................................................................................................ 37
8.1 General ............................................................................................................................................................. 37
8.1.1 Generic requirements ................................................................................................................................. 37
8.1.2 Standard connections.................................................................................................................................. 37
8.1.3 Colour......................................................................................................................................................... 37
8.2 Hardware products with speech output ............................................................................................................ 37
8.2.1 Speech volume gain ................................................................................................................................... 37
8.2.2 Magnetic coupling ...................................................................................................................................... 37
8.3 Stationary ICT ................................................................................................................................................. 38
8.3.0 General ....................................................................................................................................................... 38
8.3.1 Forward or side reach ................................................................................................................................. 38
8.3.2 Forward reach............................................................................................................................................. 38
8.3.3 Side reach ................................................................................................................................................... 41
8.3.4 Clear floor or ground space ........................................................................................................................ 42
8.3.5 Visibility ..................................................................................................................................................... 43
8.3.6 Installation instructions .............................................................................................................................. 43
8.4 Mechanically operable parts ............................................................................................................................ 44
8.4.1 Numeric keys ............................................................................................................................................. 44
8.4.2 Operation of mechanical parts .................................................................................................................... 44
8.4.3 Keys, tickets and fare cards ........................................................................................................................ 44
8.5 Tactile indication of speech mode ................................................................................................................... 44
9 Web ........................................................................................................................................................ 45
9.0 General (informative) ...................................................................................................................................... 45
9.1 Perceivable ....................................................................................................................................................... 45
9.1.1 Text alternatives ......................................................................................................................................... 45
9.1.2 Time-based media ...................................................................................................................................... 45
9.1.3 Adaptable ................................................................................................................................................... 46
9.1.4 Distinguishable ........................................................................................................................................... 46
9.2 Operable ........................................................................................................................................................... 47
9.2.1 Keyboard accessible ................................................................................................................................... 47
9.2.2 Enough time ............................................................................................................................................... 48
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9.2.3 Seizures and physical reactions .................................................................................................................. 48
9.2.4 Navigable ................................................................................................................................................... 48
9.2.5 Input modalities .......................................................................................................................................... 49
9.3 Understandable ................................................................................................................................................ 49
9.3.1 Readable ..................................................................................................................................................... 49
9.3.2 Predictable .................................................................................................................................................. 49
9.3.3 Input assistance .......................................................................................................................................... 49
9.4 Robust .............................................................................................................................................................. 50
9.4.1 Compatible ................................................................................................................................................. 50
9.5 WCAG 2.1 AAA Success Criteria ................................................................................................................... 50
9.6 WCAG conformance requirements .................................................................................................................. 51
10 Non-web documents ............................................................................................................................... 52
10.0 General (informative) ...................................................................................................................................... 52
10.1 Perceivable ....................................................................................................................................................... 52
10.1.1 Text alternatives ......................................................................................................................................... 52
10.1.2 Time-based media ...................................................................................................................................... 53
10.1.3 Adaptable ................................................................................................................................................... 54
10.1.4 Distinguishable ........................................................................................................................................... 54
10.2 Operable ........................................................................................................................................................... 56
10.2.1 Keyboard accessible ................................................................................................................................... 56
10.2.2 Enough time ............................................................................................................................................... 57
10.2.3 Seizures and physical reactions .................................................................................................................. 58
10.2.4 Navigable ................................................................................................................................................... 58
10.2.5 Input modalities .......................................................................................................................................... 59
10.3 Understandable ................................................................................................................................................ 60
10.3.1 Readable ..................................................................................................................................................... 60
10.3.2 Predictable .................................................................................................................................................. 60
10.3.3 Input assistance .......................................................................................................................................... 61
10.4 Robust .............................................................................................................................................................. 62
10.4.1 Compatible ................................................................................................................................................. 62
10.5 Caption positioning .......................................................................................................................................... 62
10.6 Audio description timing ................................................................................................................................. 63
11 Software ................................................................................................................................................. 64
11.0 General (informative) ...................................................................................................................................... 64
11.1 Perceivable ....................................................................................................................................................... 65
11.1.1 Text alternatives ......................................................................................................................................... 65
11.1.2 Time-based media ...................................................................................................................................... 65
11.1.3 Adaptable ................................................................................................................................................... 67
11.1.4 Distinguishable ........................................................................................................................................... 68
11.2 Operable ........................................................................................................................................................... 70
11.2.1 Keyboard accessible ................................................................................................................................... 70
11.2.2 Enough time ............................................................................................................................................... 71
11.2.3 Seizures and physical reactions .................................................................................................................. 72
11.2.4 Navigable ................................................................................................................................................... 72
11.2.5 Input modalities .......................................................................................................................................... 73
11.3 Understandable ................................................................................................................................................ 74
11.3.1 Readable ..................................................................................................................................................... 74
11.3.2 Predictable .................................................................................................................................................. 75
11.3.3 Input assistance .......................................................................................................................................... 76
11.4 Robust .............................................................................................................................................................. 76
11.4.1 Compatible ................................................................................................................................................. 76
11.5 Interoperability with assistive technology ....................................................................................................... 78
11.5.1 Closed functionality ................................................................................................................................... 78
11.5.2 Accessibility services ................................................................................................................................. 78
11.6 Documented accessibility usage ...................................................................................................................... 81
11.6.1 User control of accessibility features ......................................................................................................... 81
11.6.2 No disruption of accessibility features ....................................................................................................... 82
11.7 User preferences .............................................................................................................................................. 82
11.8 Authoring tools ................................................................................................................................................ 82
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11.8.0 General (informative) ................................................................................................................................. 82
11.8.1 Content technology .................................................................................................................................... 82
11.8.2 Accessible content creation ........................................................................................................................ 82
11.8.3 Preservation of accessibility information in transformations ..................................................................... 82
11.8.4 Repair assistance ........................................................................................................................................ 83
11.8.5 Templates ................................................................................................................................................... 83
12 Documentation and support services ...................................................................................................... 84
12.1 Product documentation .................................................................................................................................... 84
12.1.1 Accessibility and compatibility features .................................................................................................... 84
12.1.2 Accessible documentation .......................................................................................................................... 84
12.2 Support services ............................................................................................................................................... 84
12.2.1 General (informative) ................................................................................................................................. 84
12.2.2 Information on accessibility and compatibility features ............................................................................. 84
12.2.3 Effective communication ........................................................................................................................... 85
12.2.4 Accessible documentation .......................................................................................................................... 85
13 ICT providing relay or emergency service access .................................................................................. 86
13.1 Relay services requirements ............................................................................................................................ 86
13.1.1 General (informative) ................................................................................................................................. 86
13.1.2 Text relay services ...................................................................................................................................... 86
13.1.3 Sign relay services ...................................................................................................................................... 86
13.1.4 Lip-reading relay services .......................................................................................................................... 86
13.1.5 Captioned telephony services ..................................................................................................................... 86
13.1.6 Speech to speech relay services .................................................................................................................. 86
13.2 Access to relay services ................................................................................................................................... 86
13.3 Access to emergency services .......................................................................................................................... 87
14 Conformance .......................................................................................................................................... 88
Annex A (informative): Relationship between the present document and the essential requirements of
Directive 2016/2102 ............................................................................................................................... 89
Annex B (informative): Relationship between requirements and functional performance statements .......... 105
B.1 Relationships between clauses 5 to 13 and the functional performance statements ...................................... 105
B.2 Interpretation of Table B.2 ............................................................................................................................. 113
B.2.0 General ..................................................................................................................................................... 113
B.2.1 Example ................................................................................................................................................... 113
Annex C (normative): Determination of conformance ................................................................................... 115
C.1 Introduction.................................................................................................................................................... 115
C.2 Empty clause .................................................................................................................................................. 115
C.3 Empty clause .................................................................................................................................................. 115
C.4 Functional performance ................................................................................................................................. 115
C.5 Generic requirements ..................................................................................................................................... 115
C.5.1 Closed functionality ................................................................................................................................. 115
C.5.2 Activation of accessibility features .......................................................................................................... 120
C.5.3 Biometrics ................................................................................................................................................ 120
C.5.4 Preservation of accessibility information during conversion ................................................................... 120
C.5.5 Operable parts .......................................................................................................................................... 120
C.5.6 Locking or toggle controls ....................................................................................................................... 121
C.5.7 Key repeat ................................................................................................................................................ 121
C.5.8 Double-strike key acceptance ................................................................................................................... 121
C.5.9 Simultaneous user actions ........................................................................................................................ 122
C.6 ICT with two-way voice communication ....................................................................................................... 122
C.6.1 Audio bandwidth for speech .................................................................................................................... 122
C.6.2 Real-Time Text (RTT) functionality ........................................................................................................ 122
C.6.3 Caller ID ................................................................................................................................................... 126
C.6.4 Alternatives to voice-based services ........................................................................................................ 126
C.6.5 Video communication .............................................................................................................................. 126
C.6.6 Alternatives to video-based services ........................................................................................................ 127
C.7 ICT with video capabilities ............................................................................................................................ 128
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C.7.1 Caption processing technology ................................................................................................................ 128
C.7.2 Audio description technology .................................................................................................................. 129
C.7.3 User controls for captions and audio description ..................................................................................... 129
C.8 Hardware ....................................................................................................................................................... 130
C.8.1 General ..................................................................................................................................................... 130
C.8.2 Hardware products with speech output .................................................................................................... 130
C.8.3 Stationary ICT .......................................................................................................................................... 131
C.8.4 Mechanically operable parts ..................................................................................................................... 137
C.8.5 Tactile indication of speech mode ............................................................................................................ 137
C.9 Web ................................................................................................................................................................ 138
C.9.0 General (informative) ............................................................................................................................... 138
C.9.1 Perceivable ............................................................................................................................................... 138
C.9.2 Operable ................................................................................................................................................... 142
C.9.3 Understandable ......................................................................................................................................... 145
C.9.4 Robust ...................................................................................................................................................... 147
C.9.5 WCAG 2.1 AAA Success Criteria (informative) ..................................................................................... 147
C.9.6 WCAG 2.1 conformance requirements .................................................................................................... 148
C.10 Non-web documents ...................................................................................................................................... 148
C.10.0 General (informative) ............................................................................................................................... 148
C.10.1 Perceivable ............................................................................................................................................... 148
C.10.2 Operable ................................................................................................................................................... 152
C.10.3 Understandable ......................................................................................................................................... 155
C.10.4 Robust ...................................................................................................................................................... 157
C.10.5 Caption positioning .................................................................................................................................. 157
C.10.6 Audio description timing .......................................................................................................................... 157
C.11 Software ......................................................................................................................................................... 158
C.11.0 General ..................................................................................................................................................... 158
C.11.1 Perceivable ............................................................................................................................................... 158
C.11.2 Operable ................................................................................................................................................... 164
C.11.3 Understandable ......................................................................................................................................... 168
C.11.4 Robust ...................................................................................................................................................... 170
C.11.5 Interoperability with assistive technology ................................................................................................ 171
C.11.6 Documented accessibility usage ............................................................................................................... 176
C.11.7 User preferences ....................................................................................................................................... 176
C.11.8 Authoring tools......................................................................................................................................... 176
C.12 Documentation and support services ............................................................................................................. 178
C.12.1 Product documentation ............................................................................................................................. 178
C.12.2 Support services ....................................................................................................................................... 178
C.13 ICT providing relay or emergency service access ......................................................................................... 179
C.13.1 Relay service requirements ...................................................................................................................... 179
C.13.2 Access to relay services ............................................................................................................................ 180
C.13.3 Access to emergency services .................................................................................................................. 180
Annex D (informative): Further resources for cognitive accessibility ........................................................... 181
Annex E (informative): Guidance for users of the present document ............................................................ 182
E.1 Introduction.................................................................................................................................................... 182
E.2 Overview ....................................................................................................................................................... 182
E.3 Clause 4 ......................................................................................................................................................... 183
E.4 How to use the standard ................................................................................................................................. 183
E.4.1 Self scoping requirements ........................................................................................................................ 183
E.4.2 Connection between requirements and functional performance statements ............................................. 183
E.5 The European Web Accessibility Directive [i.28] ......................................................................................... 184
E.6 Annex D: Further resources for cognitive accessibility ................................................................................. 184
Annex F (informative): Change history .......................................................................................................... 185
History ............................................................................................................................................................ 186
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Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Human Factors (HF), and
the eAccessibility Joint Working Group (JWG) of CEN/CENELEC/ETSI and is now submitted for the combined Public
Enquiry and Vote phase of the standards EN Approval Procedure.
EN 301 549 was originally produced under Mandate M 376 [i.3] and specified functional accessibility requirements
applicable to ICT products and services, together with a description of the test procedures and evaluation methodology
for each accessibility requirement in a form that is suitable for use in procurement. The other deliverables prepared in
response to the original Mandate M 376 were: ETSI TR 102 612 [i.9] "Human Factors (HF); European accessibility
requirements for public procurement of products and services in the ICT domain (European Commission Mandate
M 376, Phase 1)", TR 101 550 [i.7] "Documents relevant to EN 301 549 "Accessibility requirements suitable for public
procurement of ICT products and services in Europe"", TR 101 551 [i.8] "Guidelines on the use of accessibility award
criteria suitable for public procurement of ICT products and services in Europe", and TR 101 552 [i.30] "Guidance for
the application of conformity assessment to accessibility requirements for public procurement of ICT products and
services in Europe". These have not been updated to reflect any changes to the content or scope of the present
document, made as a part of the M 554 revision effort.
This revision to EN 301 549 has been prepared under the Commission's standardisation request C(2017)2585
final [i.27] to provide, in additions to its other uses, one voluntary means of conforming to the essential requirements of
Directive 2016/2102 on the accessibility of the websites and mobile applications of public sector bodies [i.28]. The
minimum requirements of the European Web Accessibility Directive (Directive 2016/2102) are explicitly detailed in
Annex A.
Once the present document is cited in the Official Journal of the European Union under Directive 2016/2102 [i.28],
conformance with the normative clauses of the present document given in Tables A.1 and A.2 confers, within the limits
of the scope of the present document, a presumption of conformity with the corresponding essential requirements of that
Directive and associated EFTA regulations.
The present document has been developed from EN 301 549 [i.29] (V2.1.2) (08-2018).
The significant changes since EN 301 549 [i.29] (V2.1.2) are:
• the requirements related to Real-Time Text (RTT) in clause 6.2 have been revised and extended;
• the WCAG 2.1 AAA Success Criteria that were previously in an Annex D are now included in clause 9.5;
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• a new Annex D, "Further resources for cognitive accessibility", has been added;
• a new Annex E "Guidance for users of the present document" has been added.
• a new Annex F "change history" has been added.
National transposition dates
Date of adoption of this EN:
10 March 2021
Date of latest announcement of this EN (doa):
30 June 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e):
31 December 2021
Date of withdrawal of any conflicting National Standard (dow):
31 December 2022
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "may not", "need", "need not", "will",
"will not", "can" and "cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms
for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The present document is developed in response to standardisation request M 554 [i.27] from the European Commission
to CEN, CENELEC and ETSI. It is a revision of the European Standard (EN) that was initially prepared in response to
Phase 2 of Mandate M 376 [i.3].
The present document covers a wide range of requirements for a variety of ICT solutions. It is relevant for all
organizations who buy, develop or manufacture ICT products or services. It consists of fourteen clauses and six
annexes:
• Clauses 0 to 3 include background information, the scope of the standard, and links to other standards,
definitions and explanations of abbreviations.
• Clause 4 contains functional performance statements that explain the functionality that is needed to enable
users with different abilities to locate, identify and operate functions in technology. The user needs underlying
the functional performance statements are the basis for the requirements in subsequent clauses.
• Clauses 5 to 13 provide specific testable criteria for accessible ICT, related to technical requirements for
different kinds of ICT, starting with generic requirements in clause 5.
• Clause 14 is about conformance. All clauses except those in clause 12, related to documentation and support
services, are self-scoping. This means they are introduced with the phrase 'Where ICT <pre-condition>'.
Conformance is achieved when the pre-condition is true and the corresponding test (in Annex C) is passed.
When the pre-condition is false the requirement is not applicable.
• Annex A has two tables with requirements related to Directive 2016/2102 on the accessibility of the websites
and mobile applications of public sector bodies [i.28]. The first table applies to web pages and documents and
the second applies to mobile applications. The minimum requirements are collected from clauses 9, 10 and 11
and some requirements from clauses 5, 6, 7 and 12 that are relevant to fulfill the Directive.
• Annex B contains a table showing which of the requirements set out in clauses 5 to 13 related to different
types of ICT support the user needs as expressed in the functional performance statements of clause 4.
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• Annex C is a normative annex that sets out the means necessary to determine conformance with the individual
requirements. It does not provide a testing methodology.
• Annex D points to additional resources related to improving accessibility for users with limited cognitive,
language and learning abilities.
• Annex E provides an overview and simple explanation of the structure of the present document, including an
explanation of how it can be used.
• Annex F provides a change history table.
When the present document is used for most purposes, including when used in ICT procurement, all of the requirements
in clauses 5 to 13, as well as the functional performance statements in clause 4 should be considered. The potential
applicability of any requirement can be determined from the self-scoping phrase at the beginning of each requirement.
When the present document is used as the basis to determine conformity with the essential requirements of Directive
2016/2102 on the accessibility of the websites and mobile applications of public sector bodies [i.28], Tables A.1 and
A.2 in Annex A identify all the applicable requirements.
NOTE 1: The present document reflects the content of the W3C WCAG 2.1 Recommendation [5].
NOTE 2: Annex E provides an overview and simple explanation of the structure of the present document, including
an explanation of how it can be used. Readers who are unfamiliar with the present document are
recommended to read Annex E first to give them a better understanding of the present document and how
to use it.
The WCAG 2.1 [5] content referenced in clauses 9, 10 and 11 is subject to the following specific copyright provisions:
Copyright © 2017-2018 W3C® (MIT, ERCIM, Keio, Beihang). The W3C document license applies.
See the document use license and copyright FAQ for more information:
http://www.w3.org/Consortium/Legal/copyright-documents
http://www.w3.org/Consortium/Legal/IPR-FAQ
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1 Scope
The present document specifies the functional accessibility requirements applicable to ICT products and services,
together with a description of the test procedures and evaluation methodology for each accessibility requirement in a
form that is suitable for use in public procurement within Europe. The present document is intended to be used with web
based technologies, non-web technologies and hybrids that use both. It covers both software and hardware as well as
services. It is intended for use by both providers and procurers, but it is expected that it will also be of use to many
others as well.
The relationship between the present document and the essential requirements of Directive 2016/2102 on the
accessibility of the websites and mobile applications of public sector bodies [i.28] is given in Annex A.
The present document contains the necessary functional requirements and provides a reference document such that if
procedures are followed by different actors, the results of testing are similar and the interpretation of those results is
clear. The test descriptions and evaluation methodology included in the present document are elaborated to a level of
detail compliant with ISO/IEC 17007:2009 [i.14], so that conformance testing can give conclusive results.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at ETSI
References in docbox.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI ETS 300 381 (Edition 1) (December 1994): "Telephony for hearing impaired people;
Inductive coupling of telephone earphones to hearing aids".
[2] ETSI ES 200 381-1 (V1.2.1) (October 2012): "Telephony for hearing impaired people; Inductive
coupling of telephone earphones to hearing aids; Part 1: Fixed-line speech terminals".
[3] ETSI ES 200 381-2 (V1.1.1) (October 2012): "Telephony for hearing impaired people; Inductive
coupling of telephone earphones to hearing aids; Part 2: Cellular speech terminals".
[4] W3C Recommendation (December 2008)/ISO/IEC 40500:2012: "Web Content Accessibility
Guidelines (WCAG) 2.0".
NOTE: Available at WCAG 2.0.
[5] W3C Recommendation (June 2018): "Web Content Accessibility Guidelines (WCAG) 2.1".
NOTE: Available at WCAG 2.1.
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2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ANSI/IEEE C63.19 (2011): "American National Standard Method of Measurement of
Compatibility between Wireless Communication Devices and Hearing Aids".
[i.2] ANSI/TIA-4965: "Receive volume control requirements for digital and analogue wireline
terminals".
[i.3] European Commission M 376-EN: "Standardization Mandate to CEN, CENELEC and ETSI in
support of European accessibility requirements for public procurement of products and services in
the ICT domain".
[i.4] ETSI EG 201 013: "Human Factors (HF); Definitions, abbreviations and symbols".
[i.5] ETSI ES 202 975: "Human Factors (HF); Requirements for relay services".
[i.6] ETSI ETS 300 767: "Human Factors (HF); Telephone Prepayment Cards; Tactile Identifier".
[i.7] ETSI/CEN/CENELEC TR 101 550: "Documents relevant to EN 301 549 "Accessibility
requirements suitable for public procurement of ICT products and services in Europe"".
[i.8] ETSI/CEN/CENELEC TR 101 551: "Guidelines on the use of accessibility award criteria suitable
for public procurement of ICT products and services in Europe".
[i.9] ETSI TR 102 612: "Human Factors (HF); European accessibility requirements for public
procurement of products and services in the ICT domain (European Commission Mandate M 376,
Phase 1)".
[i.10] ETSI TS 126 114: "Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia
Subsystem (IMS); Multimedia telephony; Media handling and interaction (3GPP TS 26.114)".
[i.11] ETSI TS 122 173: "Digital cellular telecommunications system (Phase 2+) (GSM); Universal
Mobile Telecommunications System (UMTS); LTE; IP Multimedia Core Network Subsystem
(IMS) Multimedia Telephony Service and supplementary services; Stage 1 (3GPP TS 22.173)".
[i.12] ETSI TS 134 229: "Universal Mobile Telecommunications System (UMTS); LTE; Internet
Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and
Session Description Protocol (SDP); User Equipment (UE) conformance specification (3GPP
TS 34.229)".
[i.13] IETF RFC 4103 (2005): "RTP Payload for Text Conversation".
[i.14] ISO/IEC 17007:2009: "Conformity assessment - Guidance for drafting normative documents
suitable for use for conformity assessment".
[i.15] ISO 9241-11:2018: "Ergonomics of human-system interaction - Part 11: Usability: Definitions and
concepts".
[i.16] ISO 9241-110:2006: "Ergonomics of human-system interaction - Part 110: Dialogue principles".
[i.17] ISO 9241-171:2008: "Ergonomics of human-system interaction - Part 171: Guidance on software
accessibility".
[i.18] Void.
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[i.19] ISO/IEC 13066-1:2011: "Information technology - Interoperability with assistive technology (AT)
- Part 1: Requirements and recommendations for interoperability".
[i.20] Recommendation ITU-T E.161 (2001): "Arrangement of digits, letters and symbols on telephones
and other devices that can be used for gaining access to a telephone network".
[i.21] Recommendation ITU-T G.722 (1988): "7 kHz audio-coding within 64 kbit/s".
[i.22] Recommendation ITU-T G.722.2 (2003): "Wideband coding of speech at around 16 kbit/s using
Adaptive Multi-Rate Wideband (AMR-WB)".
[i.23] Recommendation ITU-T V.18 (2000): "Operational and interworking requirements for DCEs
operating in the text telephone mode".
[i.24] TIA-1083-A (2010): "Telecommunications; Telephone Terminal equipment; Handset magnetic
measurement procedures and performance requirements".
[i.25] Section 508 of the United States Rehabilitation Act of 1973, revised 2017.
NOTE: Available at https://www.section508.gov/manage/laws-and-policies.
[i.26] W3C Working Group Note 5 September 2013: "Guidance on Applying WCAG 2.0 to Non-Web
Information and Communications Technologies (WCAG2ICT)".
NOTE: Available at http://www.w3.org/TR/wcag2ict/.
[i.27] M 554 Commission Implementing Decision C(2017)2585 of 27.4.2017 on a standardisation
request to the European standardisation organisations in support of Directive (EU) 2016/2102 of
the European Parliament and of the Council on the accessibility of the websites and mobile
applications of public sector bodies.
[i.28] Directive (EU) 2016/2102 of the European Parliament and of the Council of 26 October 2016 on
the accessibility of the websites and mobile applications of public sector bodies.
[i.29] ETSI/CEN/CENELEC EN 301 549 (V2.1.2) (August 2018): "Accessibility requirements for ICT
products and services".
[i.30] ETSI/CEN/CENELEC TR 101 552: "Guidance for the application of conformity assessment to
accessibility requirements for public procurement of ICT products and services in Europe".
[i.31] ISO/IEC TS 20071-25:2017: "Information technology - User interface component accessibility -
Part 25: Guidance on the audio presentation of text in videos, including captions, subtitles and
other on-screen text".
[i.32] W3C Recommendation (September 2015): "Authoring Tool Accessibility Guidelines (ATAG)
2.0".
NOTE: Available at http://www.w3.org/TR/ATAG20/.
[i.33] W3C Recommendation (September 2015): "User Agent Accessibility Guidelines (UAAG) 2.0".
NOTE: Available at http://www.w3.org/TR/UAAG20/.
[i.34] ISO 21542:2011: "Building construction - Accessibility and usability of the built environment".
[i.35] ISO/IEC Guide 71:2014: "Guide for addressing accessibility in standards".
[i.36] Recommendation ITU-T T.140 (1988): "Protocol for multimedia application text conversation".
[i.37] Recommendation ITU-T F.703 (2000): "Multimedia conversational services".
[i.38] W3C WebSchemas/Accessibility 2.0.
NOTE: Available at https://www.w3.org/wiki/WebSchemas/Accessibility.
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[i.39] Void.
[i.40] Directive 2014/24/EU of the European Parliament and of the Council of 26 February 2014 on
public procurement and repealing Directive 2004/18/EC.
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3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI EG 201 013 [i.4] and the following apply:
accessibility: extent to which products, systems, services, environments and facilities can be used by people from a
population with the widest range of user needs, characteristics and capabilities, to achieve identified goals in identified
contexts of use (from ISO 9241-11:2018 [i.15])
NOTE 1: Context of use includes direct use or use supported by assistive technologies.
NOTE 2: The context in which the ICT is used may affect its overall accessibility. This context could include other
products and services with which the ICT may interact.
access space: space intended to be occupied by the person, including their Assistive Technology, while they are using
the product
Assistive Listening Devices (ALDs): devices that help separate the sounds, particularly speech, that a person wants to
hear from background noise by bringing sound directly into the ear
NOTE: These are often found in meetings and public venues such as plays, concerts and places of worship. They
can also be used at home with televisions and other products with auditory output.
Assistive Technology (AT): equipment, product system, hardware, software or service that is used to increase,
maintain or improve capabilities of individuals (from ISO/IEC Guide 71:2014 [i.35])
NOTE 1: Assistive technology is an umbrella term that is broader than assistive products.
NOTE 2: Assistive technology can include assistive services, and professional services needed for assessment,
recommendation and provision.
NOTE 3: Where ICT does not support directly connected assistive technology, but which can be operated by a
system connected over a network or other remote connection, such a separate system (with any included
assistive technology) can also be considered assistive technology. This is an additional note, not included
in ISO/IEC Guide 71:2014 [i.35].
audio description: additional audible narrative, interleaved with the dialogue, which describes the significant aspects
of the visual content of audio-visual media that cannot be understood from the main soundtrack alone
NOTE: This is also variously described using terms such as "video description" or variants such as "descriptive
narration".
authoring tool: software that can be used to create or modify content
NOTE 1: An authoring tool may be used by a single user or multiple users working collaboratively.
NOTE 2: An authoring tool may be a single stand-alone application or be comprised of collections of applications.
NOTE 3: An authoring tool may produce content that is intended for further modification or for use by end-users.
caption: synchronized visual and/or text alternative for both speech and non-speech audio information needed to
understand the media content (after WCAG 2.1 [5])
NOTE: This is also variously described using terms such as "subtitles" or variants such as "subtitles for the deaf
and hard-of-hearing".
closed functionality: functionality that is limited by characteristics that prevent a user from attaching, installing or
using assistive technology
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content: information and sensory experience to be communicated to the user by means of software, including code or
mark-up that defines the content's structure, presentation, and interactions (after WCAG2ICT [i.26])
NOTE: Content occurs in three places: web pages, documents and software. When content occurs in a web page
or a document, a user agent is needed in order to communicate the content's information and sensory
experience to the user. When content occurs in software, a separate user agent is not needed in order to
communicate the content's information and sensory experience to the user - the software itself performs
that function.
context of use: combination of users, goals and tasks, resources, and environment. (from ISO 9241-11:2018 [i.15])
NOTE: The "environment" in a context of use includes the technical, physical, social, cultural and organizational
environments.
document: logically distinct assembly of content (such as a file, set of files, or streamed media) that functions as a
single entity rather than a collection, that is not part of software and that does not include its own user agent (after
WCAG2ICT [i.26])
NOTE 1: A document always requires a user agent to present its content to the user.
NOTE 2: Letters, e-mail messages, spreadsheets, books, pictures, presentations, and movies are examples of
documents.
NOTE 3: Software configuration and storage files such as databases and virus definitions, as well as computer
instruction files such as source code, batch/script files, and firmware, are examples of files that function
as part of software and thus are not examples of documents. If and where software retrieves "information
and sensory experience to be communicated to the user" from such files, it is just another part of the
content that occurs in software and is covered by WCAG2ICT like any other parts of the software. Where
such files contain one or more embedded documents, the embedded documents remain documents under
this definition.
NOTE 4: A collection of files zipped together into an archive, stored within a single virtual hard drive file, or stored
in a single encrypted file system file, do not constitute a single document when so collected together. The
software that archives/encrypts those files or manages the contents of the virtual hard drive does not
function as a user agent for the individually collected files in that collection because that software is not
providing a fully functioning presentation of that content.
NOTE 5: Anything that can present its own content without involving a user agent, such as a self-playing book, is
not a document but is software.
NOTE 6: A single document may be composed of multiple files such as the video content and closed caption text.
This fact is not usually apparent to the end-user consuming the document/content.
NOTE 7: An assembly of files that represented the video, audio, captions and timing files for a movie is an example
of a document.
NOTE 8: A binder file used to bind together the various exhibits for a legal case would not be a document.
NOTE 9: Documents may contain sub-documents.
embedded: directly included in the content that is downloaded to the user agent and its extension, and is intended to be
used in rendering the web page
NOTE: Something that is downloaded using a mechanism on the web page but is not used in rendering the page is
not "embedded" in the page.
ICT network: technology and resources supporting the connection and operation of interconnected ICT
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Information and Communication Technology (ICT): technology, equipment, or interconnected system or subsystem
of equipment for which the principal function is the creation, conversion, duplication, automatic acquisition, storage,
analysis, evaluation, manipulation, management, movement, control, display, switching, interchange, transmission,
reception, or broadcast of data or information
NOTE: Examples of ICT are web pages, electronic content, telecommunications products, computers and
ancillary equipment, software including mobile applications, information kiosks and transaction
machines, videos, IT services, and multifunction office machines which copy, scan, and fax documents.
mechanically operable part: operable part that has a mechanical interface to activate, deactivate, or adjust the ICT
NOTE: Examples of mechanically operable parts include scanner covers, notebook docking stations and lids as
well as physical switches and latches.
mechanism for private listening: auditory output designed so that only the current user can receive the sound
NOTE: Personal headsets, directional speakers and audio hoods are examples of mechanisms for private listening.
non-text content: content that is not a sequence of characters that can be programmatically determined or where the
sequence is not expressing something in human language (after WCAG 2.1 [5])
non-web document: document that is not a web page, not embedded in web pages nor used in the rendering or
functioning of the page
non-web software: software that is not a web page, not embedded in web pages nor used in the rendering or
functioning of the page
open functionality: functionality that supports access by assistive technology
NOTE: This is the opposite of closed functionality.
operable part: component of ICT used to activate, deactivate, or adjust the ICT
NOTE 1: Operable parts can be provided in either hardware (see mechanically operable parts, above) or software.
An on-screen button is an example of an operable part provided by software.
NOTE 2: Operable parts do not include parts involved only in maintenance or repair or other actions that are not
expected of a typical user if the product is not malfunctioning. These actions include: clearing paper jams
internal to the machine, replacing items or parts internal to the machine that may expose the end user to
sharp or hot surfaces, replacing or repairing items designated by manufacturers as service or maintenance
items in user documentation.
platform software (platform): collection of software components that runs on an underlying software or hardware
layer, and that provides a set of software services to other software components that allows those applications to be
isolated from the underlying software or hardware layer (after ISO/IEC 13066-1 [i.19])
NOTE: A particular software component might play the role of a platform in some situations and a client in
others.
programmatically determinable: able to be read by software from developer-supplied data in a way that other
software, including assistive technologies, can extract and present this information to users in different modalities
NOTE: WCAG 2.1 uses "determined" where this definition uses "able to be read" (to avoid ambiguity with the
word "determined").
Real-Time Text (RTT): form of a text conversation in point to point situations or in multipoint conferencing where the
text being entered is sent in such a way that the communication is perceived by the user as being continuous
NOTE 1: Users will perceive communication as continuous if the delay between text being created by the sender
and received by the recipient is less than 500 ms. However, the actual delay will be dependent on the
communication network.
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NOTE 2: The creation of text will differ between systems where text is entered on a word-by-word basis
(e.g. speech‑to‑text and predictive-text based systems) and systems where each character is separately
generated (e.g. typing on a physical keyboard).
satisfies a success criterion: success criterion does not evaluate to "false" when applied to the ICT (after
WCAG 2.1 [5])
single user connection: connection that consists of sound, RTT or video (or a combination of two or three of those
media) that is established by a single user action
NOTE: Even though the different media may travel over different channels, and more than one piece of hardware
may be involved, it appears to the user like a single connection, and is treated by any intermediate
technologies (e.g. network, auto-reception) as a single connection for purposes such as transfer.
spoken captions/subtitles audio captions/subtitles: captions/subtitles that are voiced over the audiovisual content
(from ISO/IEC TS 20071-25 [i.31])
stationary ICT: ICT that stands on the floor, or is mounted on a wall or other immovable structure, and is not intended
to be moved by its user
NOTE 1: Typically, stationary ICT rests on the ground (such as an information kiosk) or is installed in a wall (such
as a machine that dispenses cash or performs other banking services).
NOTE 2: A manufacturer cannot control the height of ICT that is put on a table by someone else, but they are able
to control the reach dimensions of self-contained ICT that rests on the ground and can specify the heights
for installation in walls.
terminal: combination of hardware and/or software with which the end user directly interacts and that provides the user
interface
NOTE 1: The hardware may consist of more than one device working together e.g. a mobile device and a computer.
NOTE 2: For some systems, the software that provides the user interface may reside on more than one device such
as a telephone and a server.
turn-taking: type of organization in conversation and discourse where participants speak one at a time in alternating
turns
user agent: software that retrieves and presents content for users (after WCAG 2.1 [5])
NOTE 1: Software that only displays the content contained within it is treated as software and not considered to be
a user agent.
NOTE 2: An example of software that is not a user agent is a calculator application that does not retrieve the
calculations from outside the software to present it to a user. In this case, the calculator software is not a
user agent, it is simply software with a user interface.
NOTE 3: Software that only shows a preview of content such as a thumbnail or other non-fully functioning
presentation is not providing user agent functionality.
user interface: all components of an interactive system (software or hardware) that provide information and/or controls
for the user to accomplish specific tasks with the interactive system (from ISO 9241-110 [i.16])
user interface element: entity of the user interface that is presented to the user by the software (after
ISO 9241-171 [i.17])
NOTE 1: This term is also known as "user interface component".
NOTE 2: User-interface elements can be interactive or not.
web content: content that belongs to a web page, and that is used in the rendering or that is intended to be used in the
rendering of the web page
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web page: non-embedded resource obtained from a single URI using HTTP plus any other resources that are used in
the rendering or intended to be rendered together with it by a user agent (after WCAG 2.1 [5])
3.2 Symbols
Void.
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ANSI American National Standards Institute
AT Assistive Technology
ATAG Authoring Tool Accessibility Guidelines (of W3C)
CEN Comité Européen de Normalisation
CSS Cascading Style Sheets
DOM Document Object Model
EFTA European Free Trade Area
EU European Union
FPS Frames Per Second
FXML XML-based user interface markup language
HTML HyperText Markup Language
HTTP HyperText Transfer Protocol
ICT Information and Communication Technology
IETF Internet Engineering Task Force
IMS IP Multimedia System
IP Internet Protocol
ISO International Organization for Standardization
ITU-T International Telecommunication Union - Telecommunication standardization sector
JWG Joint Working Group (of CEN/CENELEC/ETSI)
LED Light Emitting Device
ODF Open Document Format
OOXML Office Open eXtensible Markup Language
PSTN Public Switched Telephone Network
QVGA Quarter Video Graphics Array
RFC Request For Comment
RTT Real-Time Text
SIP Session Initiation Protocol
UAAG User Agent Accessibility Guidelines (of W3C)
URI Uniform Resource Identifier
USB Universal Serial Bus
VGA Video Graphics Array
VOIP Voice Over IP
W3C World Wide Web Consortium
WAI Web Accessibility Initiative
WCAG Web Content Accessibility Guidelines (of W3C)
WLAN Wireless Local Access Network
XML eXtensible Markup Language
XUL XML User interface Language
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4 Functional performance
4.1 Meeting functional performance statements
The statements set out in clause 4.2 are intended to describe the functional performance of ICT enabling people to
locate, identify, and operate ICT functions, and to access the information provided, regardless of physical, cognitive or
sensory abilities. Any differences in ability may be permanent, temporary or situational. The requirements in clauses 5
to 13 provide specific testable criteria for accessible ICT, corresponding to the user needs reflected in clause 4.2.
NOTE 1: The relationship between the requirements from clauses 5 to 13 and the functional performance
statements is set out in Annex B.
NOTE 2: The intent of clause 4.2 is to describe the ICT performance in enabling users to access the full
functionality and documentation of the product or the service with or without the use of assistive
technologies.
NOTE 3: The methods of meeting the accessibility needs of users with multiple access needs will depend on the
specific combination of needs. Meeting these user accessibility needs may be addressed by considering
multiple clauses in clause 4.2.
NOTE 4: Several users' accessibility needs rely on ICT providing specific modes of operation. If a user is to
activate, engage or switch to the mode that complies with his or her user accessibility needs, the method
for activating, engaging or switching to that mode would need to comply with the same user accessibility
needs.
4.2 Functional performance statements
4.2.1 Usage without vision
Where ICT provides visual modes of operation, the ICT provides at least one mode of operation that does not require
vision. This is essential for users without vision and benefits many more users in different situations.
NOTE 1: A web page or application with a well formed semantic structure can allow users without vision to
identify, navigate and interact with a visual user interface.
NOTE 2: Audio and tactile user interfaces may contribute towards meeting this clause.
4.2.2 Usage with limited vision
Where ICT provides visual modes of operation, the ICT provides features that enable users to make better use of their
limited vision. This is essential for users with limited vision and benefits many more users in different situations.
NOTE 1: Magnification, reduction of required field of vision and control of contrast, brightness and intensity can
contribute towards meeting this clause.
NOTE 2: Where significant features of the user interface are dependent on depth perception, the provision of
additional methods of distinguishing between the features may contribute towards meeting this clause.
NOTE 3: Users with limited vision may also benefit from non-visual access (see clause 4.2.1).
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4.2.3 Usage without perception of colour
Where ICT provides visual modes of operation, the ICT provides a visual mode of operation that does not require user
perception of colour. This is essential for users with limited colour perception and benefits many more users in different
situations.
NOTE: Where significant features of the user interface are colour-coded, the provision of additional methods of
distinguishing between the features may contribute towards meeting this clause.
4.2.4 Usage without hearing
Where ICT provides auditory modes of operation, the ICT provides at least one mode of operation that does not require
hearing. This is essential for users without hearing and benefits many more users in different situations.
NOTE: Visual and tactile user interfaces, including those based on sign language, may contribute towards
meeting this clause.
4.2.5 Usage with limited hearing
Where ICT provides auditory modes of operation, the ICT provides enhanced audio features. This is essential for users
with limited hearing and benefits many more users in different situations.
NOTE 1: Enhancement of the audio clarity, reduction of background noise, providing a joint monaural option,
adjustment of balance of both audio channels, increased range of volume and greater volume in the higher
frequency range can contribute towards meeting this clause.
NOTE 2: Allowing the use of Assistive Listening Devices, such as headsets with noise cancellation (connected by
cable, Bluetooth or WLAN) can contribute towards meeting this clause.
NOTE 3: Users with limited hearing may also benefit from non-hearing access (see clause 4.2.4).
4.2.6 Usage with no or limited vocal capability
Where ICT requires vocal input from users, the ICT provides at least one mode of operation that does not require them
to generate vocal output. This is essential users with no or limited vocal capability and benefits many more users in
different situations.
NOTE 1: Vocal output includes speech and other orally generated sounds, such as whistles and clicks.
NOTE 2: Keyboard, pen or touch user interfaces may contribute towards meeting this clause.
4.2.7 Usage with limited manipulation or strength
Where ICT requires manual actions, the ICT provides features that enable users to make use of the ICT through
alternative actions not requiring manipulation, simultaneous action or hand strength. This is essential for users with
limited manipulation or strength and benefits many more users in different situations.
NOTE 1: Examples of operations that users may not be able to perform include those that require fine motor
control, path dependant gestures, pinching, twisting of the wrist, tight grasping, or simultaneous manual
actions.
NOTE 2: One-handed operation, sequential key entry and speech user interfaces may contribute towards meeting
this clause.
NOTE 3: Some users have limited hand strength and may not be able to achieve the level of strength to perform an
operation. Alternative user interface solutions that do not require hand strength may contribute towards
meeting this clause.
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4.2.8 Usage with limited reach
Where ICT products are free-standing or installed, all the elements required for operation will need to be within reach
of all users. This is essential for users with limited reach and benefits many more users in different situations.
NOTE: Considering the needs of wheelchair users and the range of user statures in the placing of operational
elements of the user interface may contribute towards meeting this clause.
4.2.9 Minimize photosensitive seizure triggers
Where ICT provides visual modes of operation, the ICT provides at least one mode of operation that minimizes the
potential for triggering photosensitive seizures. This is essential for users with photosensitive seizure triggers.
NOTE: Limiting the area and number of flashes per second may contribute towards meeting this clause.
4.2.10 Usage with limited cognition, language or learning
The ICT provides features and/or presentation that makes it simpler and easier to understand, operate and use. This is
essential for users with limited cognition, language or learning, and benefits many more users in different situations.
NOTE 1: Adjustable timings, error indication and suggestion, and a logical focus order are examples of design
features that may contribute towards meeting this clause.
NOTE 2: Providing an audio output of the text is an example of providing support for people with limited reading
abilities.
NOTE 3: Providing spelling aid and word prediction of the text is an example of providing support for people with
limited writing abilities.
NOTE 4: Interaction with content can be made easier, and less prone to errors, by presenting tasks in steps that are
easy to follow.
4.2.11 Privacy
Where ICT provides features for accessibility, the ICT maintains the privacy of users of these features at the same level
as other users.
NOTE: Enabling the connection of personal headsets for private listening, not providing a spoken version of
characters being masked and enabling user control of legal, financial and personal data are examples of
design features that may contribute towards meeting this clause.
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5 Generic requirements
5.1 Closed functionality
5.1.1 Introduction (informative)
ICT has closed functionality for many reasons, including design or policy. Some of the functionality of products can be
closed because the product is self-contained and users are precluded from adding peripherals or software in order to
access that functionality.
ICT may have closed functionality in practice even though the ICT was not designed, developed or supplied to be
closed.
Computers that do not allow end-users to adjust settings or install software are functionally closed.
5.1.2 General
5.1.2.1 Closed functionality
Where ICT has closed functionality, it shall meet the requirements set out in clauses 5.2 to 13, as applicable.
NOTE 1: ICT may close some, but not all, of its functionalities. Only the closed functionalities have to conform to
the requirements of clause 5.1.
NOTE 2: The requirements within this clause replace those in clauses 5.2 to 13 that specifically state that they do
not apply to closed functionality. This may be because they relate to compatibility with assistive
technology or to the ability for the user to adjust system accessibility settings in products with closed
functionality (e.g. products that prevent access to the system settings control panel).
5.1.2.2 Assistive technology
Where ICT has closed functionality, that closed functionality shall be operable without requiring the user to attach,
connect or install assistive technology and shall conform to the generic requirements of clauses 5.1.3 to 5.1.6 as
applicable. Personal headsets and personal induction loops shall not be classed as assistive technology for the purpose
of this clause.
5.1.3 Non-visual access
5.1.3.1 Audio output of visual information
Where visual information is needed to enable the use of those functions of ICT that are closed to assistive technologies
for screen reading, ICT shall provide at least one mode of operation using non-visual access to enable the use of those
functions.
NOTE 1: Non-visual access may be in an audio form, including speech, or a tactile form such as braille for deaf-
blind users.
NOTE 2: The visual information needed to enable use of some functions may include operating instructions and
orientation, transaction prompts, user input verification, error messages and non-text content.
5.1.3.2 Auditory output delivery including speech
Where auditory output is provided as non-visual access to closed functionality, the auditory output shall be delivered:
a) either directly by a mechanism included in or provided with the ICT; or
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b) by a personal headset that can be connected through a 3,5 mm audio jack, or an industry standard connection,
without requiring the use of vision.
NOTE 1: Mechanisms included in or provided with ICT may be, but are not limited to, a loudspeaker, a built-in
handset/headset, or other industry standard coupled peripheral.
NOTE 2: An industry standard connection could be a wireless connection.
NOTE 3: Some users may benefit from the provision of an inductive loop.
5.1.3.3 Auditory output correlation
Where auditory output is provided as non-visual access to closed functionality, and where information is displayed on
the screen, the ICT should provide auditory information that allows the user to correlate the audio with the information
displayed on the screen.
NOTE 1: Many people who are legally blind still have visual ability, and use aspects of the visual display even if it
cannot be fully comprehended. An audio alternative that is both complete and complementary includes all
visual information such as focus or highlighting, so that the audio can be correlated with information that
is visible on the screen at any point in time.
NOTE 2: Examples of auditory information that allows the user to correlate the audio with the information
displayed on the screen include structure and relationships conveyed through presentation.
5.1.3.4 Speech output user control
Where speech output is provided as non-visual access to closed functionality, the speech output shall be capable of
being interrupted and repeated when requested by the user, where permitted by security requirements.
NOTE 1: It is best practice to allow the user to pause speech output rather than just allowing them to interrupt it.
NOTE 2: It is best practice to allow the user to repeat only the most recent portion rather than requiring play to start
from the beginning.
5.1.3.5 Speech output automatic interruption
Where speech output is provided as non-visual access to closed functionality, the ICT shall interrupt current speech
output when a user action occurs and when new speech output begins.
NOTE: Where it is essential that the user hears the entire message, e.g. a safety instruction or warning, the ICT
may need to block all user action so that speech is not interrupted.
5.1.3.6 Speech output for non-text content
Where ICT presents non-text content, the alternative for non-text content shall be presented to users via speech output
unless the non-text content is pure decoration or is used only for visual formatting. The speech output for non-text
content shall follow the guidance for "text alternative" described in WCAG 2.1 [5] Success Criterion 1.1.1.
5.1.3.7 Speech output for video information
Where pre-recorded video content is needed to enable the use of closed functions of ICT and where speech output is
provided as non-visual access to closed functionality, the speech output shall present equivalent information for the
pre-recorded video content.
NOTE: This speech output can take the form of an audio description or an auditory transcript of the video
content.
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5.1.3.8 Masked entry
Where auditory output is provided as non-visual access to closed functionality, and the characters displayed are
masking characters, the auditory output shall not be a spoken version of the characters entered unless the auditory
output is known to be delivered only to a mechanism for private listening, or the user explicitly chooses to allow
non-private auditory output.
NOTE 1: Masking characters are usually displayed for security purposes and include, but are not limited to
asterisks representing personal identification numbers.
NOTE 2: Unmasked character output might be preferred when closed functionality is used, for example, in the
privacy of the user's home. A warning highlighting privacy concerns might be appropriate to ensure that
the user has made an informed choice.
5.1.3.9 Private access to personal data
Where auditory output is provided as non-visual access to closed functionality, and the output contains data that is
considered to be private according to the applicable privacy policy, the corresponding auditory output shall only be
delivered through a mechanism for private listening that can be connected without requiring the use of vision, or
through any other mechanism explicitly chosen by the user.
NOTE 1: This requirement does not apply in cases where data is not defined as being private according to the
applicable privacy policy or where there is no applicable privacy policy.
NOTE 2: Non-private output might be preferred when closed functionality is used, for example, in the privacy of
the user's home. A warning highlighting privacy concerns might be appropriate to ensure that the user has
made an informed choice.
5.1.3.10 Non-interfering audio output
Where auditory output is provided as non-visual access to closed functionality, the ICT shall not automatically play, at
the same time, any interfering audible output that lasts longer than three seconds.
5.1.3.11 Private listening volume
Where auditory output is provided as non-visual access to closed functionality and is delivered through a mechanism for
private listening, ICT shall provide at least one non-visual mode of operation for controlling the volume.
5.1.3.12 Speaker volume
Where auditory output is provided as non-visual access to closed functionality and is delivered through speakers on
ICT, a non-visual incremental volume control shall be provided with output amplification up to a level of at least
65 dBA (-29 dBPaA).
NOTE: For noisy environments, 65 dBA may not be sufficient.
5.1.3.13 Volume reset
Where auditory output is provided as non-visual access to closed functionality, a function that resets the volume to be at
a level of 65 dBA or less after every use, shall be provided, unless the ICT is dedicated to a single user.
NOTE: A feature to disable the volume reset function may be provided in order to enable the single-user
exception to be met.
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5.1.3.14 Spoken languages
Where speech output is provided as non-visual access to closed functionality, speech output shall be in the same human
language as the displayed content provided, except:
a) for proper names, technical terms, words of indeterminate language, and words or phrases that have become
part of the vernacular of the immediately surrounding text;
b) where the content is generated externally and not under the control of the ICT vendor, the present clause shall
not be required to apply for languages not supported by the ICT's speech synthesizer;
c) for displayed languages that cannot be selected using non-visual access;
d) where the user explicitly selects a speech language that is different from the language of the displayed content.
5.1.3.15 Non-visual error identification
Where speech output is provided as non-visual access to closed functionality and an input error is automatically
detected, speech output shall identify and describe the item that is in error.
5.1.3.16 Receipts, tickets, and transactional outputs
Where ICT is closed to visual access and provides receipts, tickets or other outputs as a result of a self-service
transaction, speech output shall be provided which shall include all information necessary to complete or verify the
transaction. In the case of ticketing machines, printed copies of itineraries and maps shall not be required to be audible.
NOTE: The speech output may be provided by any element of the total ICT system.
5.1.4 Functionality closed to text enlargement
Where any functionality of ICT is closed to the text enlargement features of platform or assistive technology, the ICT
shall provide a mode of operation where the text and images of text necessary for all functionality is displayed in such a
way that a non-accented capital "H" subtends an angle of at least 0,7 degrees at a viewing distance specified by the
supplier.
The subtended angle, in degrees, may be calculated from:
Ψ = (180 x H) / (π x D)
Where:
• ψ is the subtended angle in degrees
• H is the height of the text
• D is the viewing distance
• D and H are expressed in the same units
NOTE 1: The intent is to provide a mode of operation where text is large enough to be used by most users with low
vision.
NOTE 2: Table 5.1 and Figure 1 illustrate the relationship between the maximum viewing distance and minimum
character height at the specified minimum subtended angle.
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Table 5.1: Relationship between maximum design viewing distance and
minimum character height at the limit of subtended angle
Minimum
subtended
angle
Maximum design
viewing distance
Minimum character
height
0,7 degrees
100 mm
1,2 mm
200 mm
2,4 mm
250 mm
3,1 mm
300 mm
3,7 mm
350 mm
4,3 mm
400 mm
4,9 mm
450 mm
5,5 mm
500 mm
6,1 mm
550 mm
6,7 mm
600 mm
7,3 mm
Figure 1: Relationship between minimum character height and maximum design viewing distance
5.1.5 Visual output for auditory information
Where auditory information is needed to enable the use of closed functions of ICT, the ICT shall provide visual
information that is equivalent to the auditory output.
NOTE: This visual information can take the form of captions or text transcripts.
5.1.6 Operation without keyboard interface
5.1.6.1 Closed functionality
Where ICT functionality is closed to keyboards or keyboard interfaces, all functionality shall be operable without vision
as required by clause 5.1.3.
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5.1.6.2 Input focus
Where ICT functionality is closed to keyboards or keyboard interfaces and where input focus can be moved to a user
interface element, it shall be possible to move the input focus away from that element using the same mechanism, in
order to avoid trapping the input focus.
5.1.7 Access without speech
Where speech is needed to operate closed functions of ICT, the ICT shall provide at least one mode of operation using
an alternative input mechanism that does not require speech.
5.2 Activation of accessibility features
Where ICT has documented accessibility features, it shall be possible to activate those documented accessibility
features that are required to meet a specific need without relying on a method that does not support that need.
5.3 Biometrics
Where ICT uses biological characteristics, it shall not rely on the use of a particular biological characteristic as the only
means of user identification or for control of ICT.
NOTE 1: Alternative means of user identification or for control of ICT could be non-biometric or biometric.
NOTE 2: Biometric methods based on dissimilar biological characteristics increase the likelihood that individuals
with disabilities possess at least one of the specified biological characteristics. Examples of dissimilar
biological characteristics are fingerprints, eye retinal patterns, voice, and face.
5.4 Preservation of accessibility information during conversion
Where ICT converts information or communication it shall preserve all documented non-proprietary information that is
provided for accessibility, to the extent that such information can be contained in or supported by the destination
format.
5.5 Operable parts
5.5.1 Means of operation
Where ICT has operable parts that require grasping, pinching, or twisting of the wrist to operate, an accessible
alternative means of operation that does not require these actions shall be provided.
5.5.2 Operable parts discernibility
Where ICT has operable parts, it shall provide a means to discern each operable part, without requiring vision and
without performing the action associated with the operable part.
NOTE: One way of meeting this requirement is by making the operable parts tactilely discernible.
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5.6 Locking or toggle controls
5.6.1 Tactile or auditory status
Where ICT has a locking or toggle control and the status of that control is visually presented to the user, the ICT shall
provide at least one mode of operation where the status of the control can be determined either through touch or sound
without operating the control.
NOTE 1: Locking or toggle controls are those controls that can only have two or three states and that keep their
state while being used.
NOTE 2: An example of a locking or toggle control is the "Caps Lock" key found on most keyboards. Another
example is the volume button on a pay telephone, which can be set at normal, loud, or extra loud volume.
5.6.2 Visual status
Where ICT has a locking or toggle control and the status of the control is non-visually presented to the user, the ICT
shall provide at least one mode of operation where the status of the control can be visually determined when the control
is presented.
NOTE 1: Locking or toggle controls are those controls that can only have two or three states and that keep their
state while being used.
NOTE 2: An example of a locking or toggle control is the "Caps Lock" key found on most keyboards. An example
of making the status of a control determinable is a visual status indicator on a keyboard.
5.7 Key repeat
Where ICT has a key repeat function that cannot be turned off:
a) the delay before the key repeat shall be adjustable to at least 2 seconds; and
b) the key repeat rate shall be adjustable down to one character per 2 seconds.
5.8 Double-strike key acceptance
Where ICT has a keyboard or keypad, the delay after any keystroke, during which an additional key-press will not be
accepted if it is identical to the previous keystroke, shall be adjustable up to at least 0,5 seconds.
5.9 Simultaneous user actions
Where ICT has a mode of operation requiring simultaneous user actions for its operation, such ICT shall provide at least
one mode of operation that does not require simultaneous user actions to operate the ICT.
NOTE: Having to use both hands to open the lid of a laptop, having to press two or more keys at the same time or
having to touch a surface with more than one finger are examples of simultaneous user actions.
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6 ICT with two-way voice communication
6.1 Audio bandwidth for speech
Where ICT provides two-way voice communication, in order to provide good audio quality, that ICT shall be able to
encode and decode two-way voice communication with a frequency range with an upper limit of at least 7 000 Hz.
NOTE 1: For the purposes of interoperability, support of Recommendation ITU-T G.722 [i.21] is widely used.
NOTE 2: Where codec negotiation is implemented, other standardized codecs such as Recommendation ITU-T
G.722.2 [i.22] are sometimes used so as to avoid transcoding.
6.2 Real-Time Text (RTT) functionality
6.2.1 RTT provision
6.2.1.1 RTT communication
Where ICT is in a mode that provides a means for two-way voice communication, the ICT shall provide a means for
two-way RTT communication, except where this would require design changes to add input or output hardware to the
ICT.
NOTE 1: This requirement includes those products which do not have physical display or text entry capabilities but
have the capability to connect to devices that do have such capabilities. It also includes intermediate ICT
between the endpoints of the communication.
NOTE 2: There is no requirement to add: a hardware display, a hardware keyboard, or hardware to support the
ability to connect to a display or keyboard, wired or wirelessly, if this hardware would not normally be
provided.
NOTE 3: For the purposes of interoperability, support of Recommendation ITU-T T.140 [i.36] is widely used.
6.2.1.2 Concurrent voice and text
Where ICT provides a means for two-way voice communication and for users to communicate by RTT, it shall allow
concurrent voice and text through a single user connection.
NOTE 1: With many-party communication, as in a conference system, it is allowed (but not required or necessarily
recommended) that RTT be handled in a single display field and that "turn-taking" be necessary to avoid
confusion (in the same way that turn-taking is required for those presenting/talking with voice).
NOTE 2: With many-party communication, best practice is for hand-raising for voice users and RTT users to be
handled in the same way, so that voice and RTT users are in the same queue.
NOTE 3: With a many-party conference system that has chat as one of its features - the RTT (like the voice) would
typically be separate from the chat so that RTT use does not interfere with chat (i.e. people can be
messaging in the chat field while the person is presenting/talking with RTT - in the same manner that
people message using the chat feature while people are talking with voice). RTT users would then use
RTT for presenting and use the Chat feature to message while others are presenting (via Voice or RTT).
NOTE 4: The availability of voice and RTT running concurrently (and separately from chat) can also allow the
RTT field to support text captioning when someone is speaking (and it is therefore not being used for
RTT since it is not the RTT user's turn to speak).
NOTE 5: Where both server-side software and local hardware and software are required to provide voice
communication, where neither part can support voice communication without the other and are sold as a
unit for the voice communication function, the local and server-side components are considered a single
product.
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6.2.2 Display of RTT
6.2.2.1 Visually distinguishable display
Where ICT has RTT send and receive capabilities, displayed sent text shall be visually differentiated from, and
separated from, received text.
NOTE: The ability of the user to choose between having the send and receive text be displayed in-line or
separately, and with options to select, allows users to display RTT in a form that works best for them.
This would allow Braille users to use a single field and take turns and have text appear in the sequential
way that they may need or prefer.
6.2.2.2 Programmatically determinable send and receive direction
Where ICT has RTT send and receive capabilities, the send/receive direction of transmitted/received text shall be
programmatically determinable, unless the RTT is implemented as closed functionality.
NOTE: This enables screen readers to distinguish between incoming text and outgoing text when used with RTT
functionality.
6.2.2.3 Speaker identification
Where ICT has RTT capabilities, and provides speaker identification for voice, the ICT shall provide speaker
identification for RTT.
NOTE: This is necessary to enable both voice and RTT participants to know who is currently communicating,
whether it be in RTT or voice.
6.2.2.4 Visual indicator of Audio with RTT
Where ICT provides two-way voice communication, and has RTT capabilities, the ICT shall provide a real-time visual
indicator of audio activity on the display.
NOTE 1: The visual indicator may be a simple character position on the display that flickers on and off to reflect
audio activity, or presentation of the information in another way that can be both visible to sighted users
and passed on to deaf-blind users who are using a braille display.
NOTE 2: Without this indication a person who lacks the ability to hear does not know when someone is talking.
6.2.3 Interoperability
Where ICT with RTT functionality interoperates with other ICT with RTT functionality (as required by clause 6.2.1.1)
they shall support the applicable RTT interoperability mechanisms described below:
a) ICT interoperating with other ICT directly connected to the Public Switched Telephone Network (PSTN),
using Recommendation ITU-T V.18 [i.23] or any of its annexes for text telephony signals at the PSTN
interface;
b) ICT interoperating with other ICT using VOIP with Session Initiation Protocol (SIP) and using RTT that
conforms to IETF RFC 4103 [i.13]. For ICT interoperating with other ICT using the IP Multimedia
Sub-System (IMS) to implement VOIP, the set of protocols specified in ETSI TS 126 114 [i.10], ETSI
TS 122 173 [i.11] and ETSI TS 134 229 [i.12] describe how IETF RFC 4103 [i.13] would apply;
c) ICT interoperating with other ICT using technologies other than a or b, above, using a relevant and applicable
common specification for RTT exchange that is published and available for the environments in which they
will be operating. This common specification shall include a method for indicating loss or corruption of
characters;
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d) ICT interoperating with other ICT using a standard for RTT that has been introduced for use in any of the
above environments, and is supported by all of the other active ICT that support voice and RTT in that
environment.
NOTE 1: In practice, new standards are introduced as an alternative codec/protocol that is supported alongside the
existing common standard and used when all end-to-end components support it while technology
development, combined with other reasons including societal development and cost efficiency, may make
others become obsolete.
NOTE 2: Where multiple technologies are used to provide voice communication, multiple interoperability
mechanisms may be needed to ensure that all users are able to use RTT.
EXAMPLE: A conferencing system that supports voice communication through an internet connection might
provide RTT over an internet connection using a proprietary RTT method (option c). However,
regardless of whether the RTT method is proprietary or non-proprietary, if the conferencing
system also offers telephony communication it will also need to support options a or b to ensure
that RTT is supported over the telephony connection.
6.2.4 RTT responsiveness
Where ICT utilises RTT input, that RTT input shall be transmitted to the ICT network or platform on which the ICT
runs within 500 ms of the time that the smallest reliably composed unit of text entry is available to the ICT for
transmission. Delays due to platform or network performance shall not be included in the 500 ms limit.
NOTE 1: For character by character input, the "smallest reliably composed unit of text entry" would be a character.
For word prediction it would be a word. For some voice recognition systems - the text may not exit the
recognition software until an entire word (or phrase) has been spoken. In this case, the smallest reliably
composed unit of text entry available to the ICT would be the word (or phrase).
NOTE 2: The 500 ms limit allows buffering of characters for this period before transmission so character by
character transmission is not required unless the characters are generated more slowly than 1 per 500 ms.
NOTE 3: A delay of 300 ms, or less, produces a better impression of flow to the user.
6.3 Caller ID
Where ICT provides caller identification or similar telecommunications functions, the caller identification and similar
telecommunications functions shall be available in text form as well as being programmatically determinable, unless the
functionality is closed.
6.4 Alternatives to voice-based services
Where ICT provides real-time voice-based communication and also provides voice mail, auto-attendant, or interactive
voice response facilities, the ICT shall offer users a means to access the information and carry out the tasks provided by
the ICT without the use of hearing or speech.
NOTE 1: Tasks that involve both operating the interface and perceiving the information would require that both the
interface and information be accessible without use of speech or hearing.
NOTE 2: Solutions capable of handling audio, RTT and video media could satisfy the above requirement.
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6.5 Video communication
6.5.1 General (informative)
Clause 6.5 (Video communications) provides performance requirements that support users who communicate using sign
language and lip-reading. For these users, good usability is achieved with a resolution of at least Quarter Video
Graphics Array (QVGA, 320 x 240), a frame rate of 20 frames per second and over, with a time difference between
speech audio and video that does not exceed 100 ms.
Increasing the resolution and frame rate further improves both sign language (especially finger spelling) and lipreading,
with frame rate being more important than resolution.
Time differences between audio and video (asynchronicity) can have a great impact onlip-reading - with video that lags
behind audio having greater negative effect.
End-to-end latency can be a problem in video (sign) communication. Overall delay values below 400 ms are preferred,
with an increase in preference down to 100 ms. Overall delay depends on multiple factors, including e.g. network delay
and video processing. For this reason a testable requirement on minimum values for overall delay cannot be produced.
NOTE: Recommendation ITU-T F.703 [i.37] defines and gives requirements for Total Conversation that relate to
the integration of audio, RTT and video in a single user connection.
6.5.2 Resolution
Where ICT that provides two-way voice communication includes real-time video functionality, the ICT:
a) shall support at least QVGA resolution;
b) should preferably support at least VGA resolution.
6.5.3 Frame rate
Where ICT that provides two-way voice communication includes real-time video functionality, the ICT:
a) shall support a frame rate of at least 20 Frames Per Second (FPS);
b) should preferably support a frame rate of at least 30 Frames Per Second (FPS) with or without sign language in
the video stream.
6.5.4 Synchronization between audio and video
Where ICT that provides two-way voice communication includes real-time video functionality, the ICT shall ensure a
maximum time difference of 100 ms between the speech and video presented to the user.
NOTE: Recent research shows that, if audio leads the video, the intelligibility suffers much more than the reverse.
6.5.5 Visual indicator of audio with video
Where ICT provides two-way voice communication, and includes real-time video functionality, the ICT shall provide a
real-time visual indicator of audio activity.
NOTE 1: The visual indicator may be a simple visual dot or LED, or other type of on/off indicator, that flickers to
reflect audio activity.
NOTE 2: Without this indication a person who lacks the ability to hear does not know when someone is talking.
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6.5.6 Speaker identification with video (sign language) communication
Where ICT provides speaker identification for voice users, it shall provide a means for speaker identification for real-
time signing and sign language users once the start of signing has been indicated.
NOTE 1: The speaker ID can be in the same location as for voice users for multiparty calls.
NOTE 2: This mechanism might be triggered manually by a user, or automatically where this is technically
achievable.
6.6 Alternatives to video-based services
Where ICT provides real-time video-based communication and also provides answering machine, auto attendant or
interactive response facilities, the ICT should offer users a means to access the information and carry out the tasks
related to these facilities:
a) for audible information, without the use of hearing;
b) for spoken commands, without the use of speech;
c) for visual information, without the use of vision.
NOTE: Solutions capable of generating real-time captions or handling RTT could satisfy the above requirement.
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7 ICT with video capabilities
7.1 Caption processing technology
7.1.1 Captioning playback
Where ICT displays video with synchronized audio, it shall have a mode of operation to display the available captions.
Where closed captions are provided as part of the content, the ICT shall allow the user to choose to display the captions.
NOTE 1: Captions may contain information about timing, colour and positioning. This caption data is necessary for
caption users. Timing is used for caption synchronization. Colour can be used for speaker identification.
Position can be used to avoid obscuring important information.
NOTE 2: If a Braille device is connected, the ICT should provide an option to display captions on the Braille
device.
NOTE 3: Clause 7.1.1 refers to the ability of the player to display captions. Clauses 9.1.2.2, 10.1.2.2 and 11.1.2.2
refer to the provision of captions for the content (the video).
7.1.2 Captioning synchronization
Where ICT displays captions, the mechanism to display captions shall preserve synchronization between the audio and
the corresponding captions as follows:
• Captions in recorded material: within 100 ms of the time stamp of the caption.
• Live captions: within 100 ms of the availability of the caption to the player.
7.1.3 Preservation of captioning
Where ICT transmits, converts or records video with synchronized audio, it shall preserve caption data such that it can
be displayed in a manner consistent with clauses 7.1.1 and 7.1.2.
Additional presentational aspects of the text such as screen position, text colours, text style and text fonts may convey
meaning, based on regional conventions. Altering these presentational aspects could change the meaning and should be
avoided wherever possible.
7.1.4 Captions characteristics
Where ICT displays captions, it shall provide a way for the user to adapt the displayed characteristics of captions to
their individual requirements, except where the captions are displayed as unmodifiable characters.
NOTE 1: Defining the background and foreground colour of subtitles, font type, size opacity of the background box
of subtitles, and the contour or border of the fonts can contribute to meeting this requirement.
NOTE 2: Subtitles that are bitmap images are examples of unmodifiable characters.
7.1.5 Spoken subtitles
Where ICT displays video with synchronized audio, it shall have a mode of operation to provide a spoken output of the
available captions, except where the content of the displayed captions is not programmatically determinable.
NOTE 1: Being able to manage speech output range for spoken subtitles independently from general ICT speech is
preferable for most users. That is possible when the audio file with spoken subtitle is delivered in a
separate audio track and mixed in the end users device.
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NOTE 2: Presenting the separate audio track with spoken subtitles in synchronization with the displayed
subtitles/captions improves understandability of the subtitles.
NOTE 3: Providing subtitles/captions as separate text-streams, facilitates converting the respective texts into audio.
NOTE 4: Subtitles that are bitmap images are examples where the content of the displayed captions will not be
programmatically determinable.
7.2 Audio description technology
7.2.1 Audio description playback
Where ICT displays video with synchronized audio, it shall provide a mechanism to select and play available audio
description to the default audio channel.
Where video technologies do not have explicit and separate mechanisms for audio description, an ICT is deemed to
satisfy this requirement if the ICT enables the user to select and play several audio tracks.
NOTE 1: In such cases, the video content can include the audio description as one of the available audio tracks.
NOTE 2: Audio descriptions in digital media sometimes include information to allow descriptions that are longer
than the gaps between dialogue. Support in digital media players for this "extended audio description"
feature is useful, especially for digital media that is viewed personally.
7.2.2 Audio description synchronization
Where ICT has a mechanism to play audio description, it shall preserve the synchronization between the audio/visual
content and the corresponding audio description.
7.2.3 Preservation of audio description
Where ICT transmits, converts, or records video with synchronized audio, it shall preserve audio description data such
that it can be played in a manner consistent with clauses 7.2.1 and 7.2.2.
7.3 User controls for captions and audio description
Where ICT primarily displays materials containing video with associated audio content, user controls to activate
subtitling and audio description shall be provided to the user at the same level of interaction (i.e. the number of steps to
complete the task) as the primary media controls.
NOTE 1: Primary media controls are the set of controls that the user most commonly uses to control media.
NOTE 2: Products that have a general hardware volume control, such as a telephone, or a laptop which can be
configured to display video through software but which is not its primary purpose, would not need
dedicated hardware controls for captions and descriptions; however software controls, or hardware
controls mapped through software, would need to be at the same level of interaction.
NOTE 3: It is best practice for ICT to include additional controls enabling the user to select whether captions and
audio description are turned on or off by default.
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8 Hardware
8.1 General
8.1.1 Generic requirements
The "generic requirements" of clause 5 also apply to ICT that is hardware.
8.1.2 Standard connections
Where an ICT provides user input or output device connection points, the ICT shall provide at least one input and/or
output connection that conforms to an industry standard non-proprietary format, directly or through the use of
commercially available adapters.
NOTE 1: The intent of this requirement is to ensure compatibility with assistive technologies by requiring the use
of standard connections on ICT.
NOTE 2: The word connection applies to both physical and wireless connections.
NOTE 3: Current examples of industry standard non-proprietary formats are USB and Bluetooth.
8.1.3 Colour
Where the ICT has hardware aspects that use colour, colour shall not be used as the only visual means of conveying
information, indicating an action, prompting a response, or distinguishing a visual element.
8.2 Hardware products with speech output
8.2.1 Speech volume gain
8.2.1.1 Speech volume range
Where ICT hardware has speech output, it shall provide a means to adjust the speech output volume level over a range
of at least 18 dB.
NOTE: Fixed-line handsets and headsets fulfilling the requirements of ANSI/TIA-4965 [i.2] are deemed to
comply with this requirement.
8.2.1.2 Incremental volume control
Where ICT hardware has speech output and its volume control is incremental, it shall provide at least one intermediate
step of 12 dB gain above the lowest volume setting.
8.2.2 Magnetic coupling
8.2.2.1 Fixed-line devices
Where ICT hardware is a fixed-line communication device with speech output and which is normally held to the ear, it
shall provide a means of magnetic coupling which meets the requirements of ETSI ES 200 381-1 [2] and shall carry the
"T" symbol specified in ETSI ETS 300 381 [1].
NOTE 1: ICT fulfilling the requirements of TIA-1083-A [i.24] is deemed to comply with the requirements of this
clause.
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NOTE 2: Magnetic coupling is also known as inductive coupling for T-coil.
8.2.2.2 Wireless communication devices
Where ICT hardware is a wireless communication device with speech output which is normally held to the ear, it shall
provide a means of magnetic coupling to hearing technologies which meets the requirements of ETSI ES 200 381-2 [3].
NOTE: ICT fulfilling the requirements of ANSI/IEEE C63.19 [i.1] is deemed to comply with the requirements of
this clause.
8.3 Stationary ICT
8.3.0 General
The present document defines the dimensions for accessing stationary ICT that can be placed in a built environment, but
does not define the dimensions of the built environment in general.
The scope includes stationary ICT, of which floors and circulation spaces are "an integral part" (typically kiosks and
cabins), and where there are external reach ranges relevant for operating the stationary ICT.
Clauses 8.3.2 to 8.3.4 specify mandatory limits for the maximum and minimum height of operable parts and displays.
Based on dimensions shown in Figure 53 of ISO 21542:2011 [i.34], it is recommended that the possible height range is
reduced to:
• minimum and maximum heights of operable parts: 800 mm and 1 100 mm respectively, and
• minimum and maximum heights of displays: 1 200 mm and 1 400 mm respectively.
8.3.1 Forward or side reach
Stationary ICT shall conform to either clause 8.3.2 or clause 8.3.3.
NOTE 1: This does not preclude conforming to both clauses.
NOTE 2: The dimensions set out in clauses 407.8.3 and 407.8.2 of Section 508 of the Rehabilitation Act, as
published in January 2017 [i.25], are identical to those given in clauses 8.3.2 and 8.3.3 of the present
document.
NOTE 3: Physical access to stationary ICT is dependent on the dimensions of both the ICT and the environment in
which it is installed and operated. Clause 8.3 does not apply to the accessibility of the physical
environment external to the ICT.
8.3.2 Forward reach
8.3.2.1 Unobstructed high forward reach
Where no part of the stationary ICT obstructs the forward reach, at least one of each type of operable part shall be
located no higher than 1 220 mm (48 inches) above the floor of the access space. This is shown in Figure 2.
8.3.2.2 Unobstructed low forward reach
Where no part of the stationary ICT obstructs the forward reach, at least one of each type of operable part shall be
located no lower than 380 mm (15 inches) above the floor of the access space. This is shown in Figure 2.
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Figure 2: Unobstructed forward reach
8.3.2.3 Obstructed forward reach
8.3.2.3.1 Clear space
Where an obstruction is an integral part of the stationary ICT and hinders the access to any type of operable part, the
ICT shall provide a clear space which extends beneath the obstructing element for a distance not less than the required
reach depth over the obstruction.
NOTE: Ensuring that there will be unhindered "access to any type of operable part" guarantees that a user will be
able access at least one of each type of operable part.
8.3.2.3.2 Obstructed (< 510 mm) forward reach
Where the stationary ICT has an obstruction which is an integral part of the ICT and which is less than 510 mm
(20 inches), the forward reach to at least one of each type of operable part shall be no higher than 1 220 mm (48 inches)
above the floor contact of the ICT. This is shown in Figure 3 (a).
8.3.2.3.3 Obstructed (< 635 mm) forward reach
Where the stationary ICT has an obstruction which is an integral part of the ICT and which is not less than 510 mm
(20 inches) but is less than 635 mm (25 inches) maximum, the forward reach to at least one of each type of operable
part shall be no higher than 1 120 mm (44 inches) above the floor contact of the ICT. This is shown in Figure 3 (b).
Figure 3: Obstructed forward reach
8.3.2.4 Knee and toe clearance width
Where the space under an obstacle that is an integral part of the stationary ICT is part of access space, the clearance
shall be at least 760 mm (30 inches) wide.
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8.3.2.5 Toe clearance
Where an obstacle is an integral part of the stationary ICT, a space under the obstacle that is less than 230 mm
(9 inches) above the floor is considered toe clearance and shall:
a) extend 635 mm (25 inches) maximum under the whole obstacle;
b) provide a space at least 430 mm (17 inches) deep and 230 mm (9 inches) above the floor under the obstacle;
c) extend no more than 150 mm (6 inches) beyond any obstruction at 230 mm (9 inches) above the floor.
This is shown in Figure 4.
Figure 4: Toe clearance
8.3.2.6 Knee clearance
Where an obstacle is an integral part of the stationary ICT, the space under the obstacle that is between 230 mm
(9 inches) and 685 mm (25 inches) above the floor is considered knee clearance and shall:
a) extend no more than 635 mm (25 inches) under the obstacle at a height of 230 mm (9 inches) above the floor;
b) extend at least 280 mm (11 inches) under the obstacle at a height of 230 mm (9 inches) above the floor;
c) extend at least 205 mm (8 inches) under the obstacle at a height of 685 mm (27 inches) above the floor;
d) be permitted to be reduced in depth at a rate of 25 mm (1 inch) for each 150 mm (6 inches) in height.
This is shown in Figure 5.
Figure 5: Knee clearance
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8.3.3 Side reach
8.3.3.1 Unobstructed high side reach
Where the side reach is unobstructed or obstructed by an element that is an integral part of the stationary ICT and which
is less than 255 mm (10 inches), at least one of each type of operable part shall be within a high side reach which is less
than or equal to 1 220 mm (48 inches) above the floor of the access space. This is shown in Figure 6.
8.3.3.2 Unobstructed low side reach
Where the side reach is unobstructed or obstructed by an element that is an integral part of the stationary ICT and which
is less than 255 mm (10 inches), at least one of each type of operable part shall be within a low side reach which is
greater than or equal to 380 mm (15 inches) above the floor of the access space. This is shown in Figure 6.
Figure 6: Unobstructed side reach
8.3.3.3 Obstructed side reach
8.3.3.3.1 Obstructed (≤ 255 mm) side reach
Where stationary ICT has an obstruction which is an integral part of the ICT, the height of the obstruction shall be less
than 865 mm (34 inches). Where the depth of the obstruction is less than or equal to 255 mm (10 inches), the high side
reach to at least one of each type of operable part shall be no higher than 1 220 mm (48 inches) above the floor of the
access space. This is shown in Figure 7 (a).
8.3.3.3.2 Obstructed (≤ 610 mm) side reach
Where stationary ICT has an obstruction which is an integral part of the ICT, the height of the obstruction shall be less
than 865 mm (34 inches). Where the depth of the obstruction is greater than 255 mm (10 inches) with a maximum depth
of 610 mm (24 inches), the high side reach to at least one of each type of operable part shall be no higher than
1 170 mm (46 inches) above the floor of the access space. This is shown in Figure 7 (b).
Figure 7: Obstructed high side reach
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8.3.4 Clear floor or ground space
8.3.4.1 Change in level
Where stationary ICT has a floor within it, then any change of floor level within it or entering it shall be ramped with a
slope no steeper than 1:48.
Exceptions:
a) If the change in floor level is less than or equal to 6,4 mm (¼ inch) the change may be vertical as shown in
Figure 8.
b) If the change in floor level is less than or equal to 13 mm (½ inch) the change may have a slope not steeper
than 1:2 as shown in Figure 9.
Figure 8: Vertical change in level
mm
mm
mm
Figure 9: Bevelled change in level
8.3.4.2 Clear floor or ground space
Where stationary ICT has an operating area within it, it shall provide a clear floor area that has the minimum
dimensions of 760 mm (30 inches) by 1 220 mm (48 inches) from which to operate the ICT. This is shown in Figure 10.
Figure 10: Clear floor or ground space
8.3.4.3 Approach
8.3.4.3.1 General
Where stationary ICT has an access space inside it, at least one full side of the space shall be unobstructed.
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8.3.4.3.2 Forward approach
Where the operating area is inside an alcove within the stationary ICT, the alcove is deeper than 610 mm (24 inches),
and where a forward approach is necessary, the dimension of the access space shall be a minimum of 915 mm
(36 inches) wide. This is shown in Figure 11.
Figure 11: Manoeuvring Clearance in an Alcove, Forward Approach
8.3.4.3.3 Parallel approach
Where the operating area is inside an alcove within the stationary ICT, the alcove is deeper than 380 mm (15 inches),
and where a parallel approach is possible, the dimension of the access space shall be a minimum of 1 525 mm
(60 inches) wide. This is shown in Figure 12.
Figure 12: Manoeuvring Clearance in an Alcove, Parallel Approach
8.3.5 Visibility
Where stationary ICT provides one or more display screens, at least one of each type of display screen shall be
positioned such that the information on the screen is legible from a point located 1 015 mm (40 inches) above the centre
of the floor of the operating area).
NOTE: The intent of this requirement is that the information on the screen can be read by users with normal
vision and appropriate language skills, when seated in a wheelchair.
8.3.6 Installation instructions
Installation instructions shall be made available for all stationary ICT. These instructions shall give guidance on how to
install the ICT in a manner that takes into account applicable requirements for accessibility of the built environment as
they apply to the installation of the ICT. Where there are no such requirements the instructions should require that the
dimensions of the installed ICT conform to clauses 8.3.2 to 8.3.5 of the present document.
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8.4 Mechanically operable parts
8.4.1 Numeric keys
Where provided, physical numeric keys arranged in a rectangular keypad layout shall have the number five key tactilely
distinct from the other keys of the keypad.
NOTE: Recommendation ITU-T E.161 [i.20] describes the 12-key telephone keypad layout and provides further
details of the form of tactile markers.
8.4.2 Operation of mechanical parts
8.4.2.1 Means of operation of mechanical parts
Where a control requires grasping, pinching, or twisting of the wrist to operate it, an accessible alternative means of
operation that does not require these actions shall be provided.
8.4.2.2 Force of operation of mechanical parts
Where a control requires a force greater than 22,2 N to operate it, an accessible alternative means of operation that
requires a force less than 22,2 N shall be provided.
NOTE: ISO 21542:2011 [i.34]: Building Construction - Accessibility and Usability of the Built Environment
recommends a value between 2,5 and 5 Newtons.
8.4.3 Keys, tickets and fare cards
Where ICT provides keys, tickets or fare cards, and their orientation is important for further use, they shall have an
orientation that is tactilely discernible.
NOTE: ETSI ETS 300 767 [i.6] defines suitable tactile indications for plastic cards.
8.5 Tactile indication of speech mode
Where ICT is designed for shared use and speech output is available, a tactile indication of the means to initiate the
speech mode of operation shall be provided.
NOTE: The tactile indication could include Braille instructions.
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9 Web
9.0 General (informative)
Requirements in clause 9 apply to web pages (as defined in clause 3.1) including:
• Conformance with W3C Web Content Accessibility Guidelines (WCAG 2.0) Level AA is equivalent to
conforming with clauses 9.1.1, 9.1.2, 9.1.3.1 to 9.1.3.3, 9.1.4.1 to 9.1.4.5, 9.2.1.1, 9.2.1.2, 9.2.2, 9.2.3, 9.2.4,
9.3, 9.4.1.1, 9.4.1.2 and the conformance requirements of clause 9.6 of the present document.
• Conformance with W3C Web Content Accessibility Guidelines (WCAG 2.1) [5] Level AA is equivalent to
conforming with all of clauses 9.1 to 9.4 and the conformance requirements of clause 9.6 of the present
document.
• Requirements for non-web documents and non-web software are given in clauses 10 and 11 respectively.
NOTE 1: When evaluating web sites they are evaluated as individual web pages. Web applications, including
mobile web applications, are covered under the definition of web page which is quite broad and covers all
web content types.
NOTE 2: WCAG 2.0 is identical to ISO/IEC 40500:2012: "Information technology - W3C Web Content
Accessibility Guidelines (WCAG) 2.0" [4].
The requirements in clauses 9.1 to 9.4 are written using the concept of satisfying success criteria (defined in clause 3.1).
A web page satisfies a WCAG success criterion when the success criterion does not evaluate to false when applied to
the web page. This implies that if the success criterion puts conditions on a specific feature and that specific feature
does not occur in the web page, then the web page satisfies the success criterion.
NOTE 3: For example, a web page that does not contain pre-recorded audio content in synchronized media will
automatically satisfy WCAG success criterion 1.2.2 (captions - pre-recorded) and, in consequence, will
also conform to clause 9.1.2.2.
In addition to Level AA success criteria, the Web Content Accessibility Guidelines also include success criteria for
Level AAA. These are listed in clause 9.5 of the present document. Web authors and procurement accessibility
specialists are encouraged to consider whether any of the WCAG Level AAA success criteria offer suggestions that
may be applicable and relevant to their project, as well as potentially beneficial to some users.
NOTE 4: The W3C states that "It is not recommended that Level AAA conformance be required as a general policy
for entire sites because it is not possible to satisfy all Level AAA Success Criteria for some content".
NOTE 5: "Void" clauses have been inserted in order to maintain alignment with the numbering of WCAG 2.1
Level A and Level AA Success Criteria.
9.1 Perceivable
9.1.1 Text alternatives
9.1.1.1 Non-text content
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.1.1 Non-text content.
9.1.2 Time-based media
9.1.2.1 Audio-only and video-only (pre-recorded)
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.2.1 Audio-only and Video-only (Prerecorded).
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9.1.2.2 Captions (pre-recorded)
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.2.2 Captions (Prerecorded).
9.1.2.3 Audio description or media alternative (pre-recorded)
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.2.3 Audio Description or Media Alternative
(Prerecorded).
9.1.2.4 Captions (live)
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.2.4 Captions (Live).
9.1.2.5 Audio description (pre-recorded)
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.2.5 Audio Description (Prerecorded).
9.1.3 Adaptable
9.1.3.1 Info and relationships
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.3.1 Info and Relationships.
9.1.3.2 Meaningful sequence
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.3.2 Meaningful Sequence.
9.1.3.3 Sensory characteristics
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.3.3 Sensory Characteristics.
9.1.3.4 Orientation
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.3.4 Orientation.
9.1.3.5 Identify input purpose
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.3.5 Identify Input Purpose.
9.1.4 Distinguishable
9.1.4.1 Use of colour
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.4.1 Use of Color.
9.1.4.2 Audio control
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.4.2 Audio Control.
9.1.4.3 Contrast (minimum)
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.4.3 Contrast (Minimum).
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9.1.4.4 Resize text
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.4.4 Resize text.
9.1.4.5 Images of text
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.4.5 Images of Text.
9.1.4.6 Void
9.1.4.7 Void
9.1.4.8 Void
9.1.4.9 Void
9.1.4.10 Reflow
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.4.10 Reflow.
9.1.4.11 Non-text contrast
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.4.11 Non-text Contrast.
9.1.4.12 Text spacing
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.4.12 Text spacing.
9.1.4.13 Content on hover or focus
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 1.4.13 Content on Hover or Focus.
9.2 Operable
9.2.1 Keyboard accessible
9.2.1.1 Keyboard
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.1.1 Keyboard.
9.2.1.2 No keyboard trap
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.1.2 No Keyboard Trap.
9.2.1.3 Void
9.2.1.4 Character key shortcuts
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.1.4 Character Key Shortcuts.
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9.2.2 Enough time
9.2.2.1 Timing adjustable
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.2.1 Timing Adjustable.
9.2.2.2 Pause, stop, hide
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.2.2 Pause, Stop, Hide.
9.2.3 Seizures and physical reactions
9.2.3.1 Three flashes or below threshold
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.3.1 Three Flashes or Below Threshold.
9.2.4 Navigable
9.2.4.1 Bypass blocks
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.4.1 Bypass Blocks.
9.2.4.2 Page titled
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.4.2 Page Titled.
9.2.4.3 Focus Order
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.4.3 Focus Order.
9.2.4.4 Link purpose (in context)
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.4.4 Link Purpose (In Context).
9.2.4.5 Multiple ways
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.4.5 Multiple Ways.
9.2.4.6 Headings and labels
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.4.6 Headings and Labels.
9.2.4.7 Focus visible
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.4.7 Focus Visible.
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9.2.5 Input modalities
9.2.5.1 Pointer gestures
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.5.1 Pointer Gestures.
9.2.5.2 Pointer cancellation
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.5.2 Pointer Cancellation.
9.2.5.3 Label in name
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.5.3 Label in Name.
9.2.5.4 Motion actuation
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 2.5.4 Motion Actuation.
9.3 Understandable
9.3.1 Readable
9.3.1.1 Language of page
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 3.1.1 Language of Page.
9.3.1.2 Language of parts
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 3.1.2 Language of Parts.
9.3.2 Predictable
9.3.2.1 On focus
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 3.2.1 On Focus.
9.3.2.2 On input
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 3.2.2 On Input.
9.3.2.3 Consistent navigation
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 3.2.3 Consistent Navigation.
9.3.2.4 Consistent identification
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 3.2.4 Consistent Identification.
9.3.3 Input assistance
9.3.3.1 Error identification
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 3.3.1 Error Identification.
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9.3.3.2 Labels or instructions
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 3.3.2 Labels or Instructions.
9.3.3.3 Error suggestion
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 3.3.3 Error Suggestion.
9.3.3.4 Error prevention (legal, financial, data)
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 3.3.4 Error Prevention (Legal, Financial, Data).
9.4 Robust
9.4.1 Compatible
9.4.1.1 Parsing
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 4.1.1 Parsing.
9.4.1.2 Name, role, value
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 4.1.2 Name, Role, Value.
9.4.1.3 Status messages
Where ICT is a web page, it shall satisfy WCAG 2.1 Success Criterion 4.1.3 Status Messages.
9.5 WCAG 2.1 AAA Success Criteria
In addition to the Level AA success criteria, included in clauses 9.1 to 9.4, the Web Content Accessibility Guidelines
include success criteria for Level AAA. These are listed in Table 9.1. Web authors and procurement accessibility
specialists are encouraged to consider the WCAG 2.1 Level AAA success criteria that, when it is possible to apply
them, may provide access beyond that required in the present document.
NOTE: The W3C states that "It is not recommended that Level AAA conformance be required as a general policy
for entire sites because it is not possible to satisfy all Level AAA Success Criteria for some content".
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Table 9.1: WCAG 2.1 Level AAA Success Criteria
No.
Guideline
Success
Criterion
Number
Success Criteria Name
1
Time-based media
1.2.6
Sign Language (Prerecorded)
2
Time-based media
1.2.7
Extended Audio Description (Prerecorded)
3
Time-based media
1.2.8
Media Alternative (Prerecorded)
4
Time-based media
1.2.9
Audio-only (Live)
5
Adaptable
1.3.6
Identify Purpose
6
Distinguishable
1.4.6
Contrast (Enhanced)
7
Distinguishable
1.4.7
Low or No Background Audio
8
Distinguishable
1.4.8
Visual Presentation
9
Distinguishable
1.4.9
Images of Text (No Exception)
10
Keyboard Accessible
2.1.3
Keyboard (No Exception)
11
Enough time
2.2.3
No Timing
12
Enough time
2.2.4
Interruptions
13
Enough time
2.2.5
Re-authenticating
14
Enough time
2.2.6
Timeouts
15
Seizures and physical reactions
2.3.2
Three Flashes
16
Seizures and physical reactions
2.3.3
Animation form Interactions
17
Navigable
2.4.8
Location
18
Navigable
2.4.9
Link Purpose (Link Only)
19
Navigable
2.4.10
Section Headings
20
Input modalities
2.5.5
Target Size
21
Input modalities
2.5.6
Concurrent Input Mechanisms
22
Readable
3.1.3
Unusual Words
23
Readable
3.1.4
Abbreviations
24
Readable
3.1.5
Reading Level
25
Readable
3.1.6
Pronunciation
26
Predictable
3.2.5
Change on Request
27
Input assistance
3.3.5
Help
28
Input assistance
3.3.6
Error Prevention (All)
9.6 WCAG conformance requirements
Where ICT is a web page, it shall satisfy all the following five WCAG 2.1 conformance requirements at Level AA [5]:
1) Conformance level
2) Full pages
3) Complete processes
4) Only Accessibility-Supported Ways of Using Technologies
5) Non-interference
NOTE 1: A Web page that meets all of requirements 9.1 to 9.4, or where a Level AA conforming alternate version
(as defined in WCAG 2.1 [5]) is provided, will meet conformance requirement 1.
NOTE 2: According to W3C: "WCAG 2.1 extends Web Content Accessibility Guidelines 2.0 [4], which was
published as a W3C Recommendation December 2008. Content that conforms to WCAG 2.1 also
conforms to WCAG 2.0, and therefore to policies that reference WCAG 2.0" [4].
NOTE 3: Conformance requirement 5 states that all content on the page, including content that is not otherwise
relied upon to meet conformance, meets clauses 9.1.4.2, 9.2.1.2, 9.2.2.2 and 9.2.3.1.
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10 Non-web documents
10.0 General (informative)
Requirements in clause 10 apply to:
• documents that are not web pages;
• documents that are not embedded in web pages; and
• documents that are provided with web pages but are neither embedded nor rendered together with the web
page from which they are provided (i.e. the present clause applies to downloadable documents).
Clause 9 provides requirements for documents that are in web pages or that are embedded in web pages and that are
used in the rendering or that are intended to be rendered together with the web page in which they are embedded.
NOTE 1: Some examples of documents are letters, spreadsheets, emails, books, pictures, presentations, and movies
that have an associated user agent such as a document reader, editor or media player.
NOTE 2: A single document may be composed of multiple files such as the video content and closed caption text.
This fact is not usually apparent to the end-user consuming the document/content.
NOTE 3: Documents require a user agent in order for the content to be presented to users. The requirements for
user agents can be found in clause 11.
NOTE 4: The requirements for content that is part of software, can be found in clause 11.
NOTE 5: The success criteria set out in clause 10 are intended to harmonize with the Working Group Note [i.26]
produced by the W3C's WCAG2ICT Task Force.
NOTE 6: "Void" clauses have been inserted in order to maintain alignment of the numbering in clauses 9, 10 and
11.
NOTE 7: Requirements in clause 10 also apply to documents that are protected using mechanisms such as digital
signatures, encryption, password protection, and watermarks when they are presented to the user.
NOTE 8: It is best practice to provide meta data on the accessibility of the document within or separate to the
document using WebSchemas/Accessibility 2.0 [i.38].
10.1 Perceivable
10.1.1 Text alternatives
10.1.1.1 Non-text content
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.1.1 Non-text Content.
NOTE: CAPTCHAs do not currently appear outside of the Web. However, if they do appear, this guidance is
accurate.
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10.1.2 Time-based media
10.1.2.1 Audio-only and video-only (pre-recorded)
Where ICT is a non-web document, it shall satisfy WCAG 2.1 Success Criterion 1.2.1 Audio-only and Video-only
(Prerecorded).
NOTE: The alternative can be provided directly in the document - or provided in an alternate version that meets
the success criterion.
10.1.2.2 Captions (pre-recorded)
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.2.2 Captions (Prerecorded).
NOTE: The WCAG 2.1 definition of "captions" notes that "in some countries, captions are called subtitles". They
are also sometimes referred to as "subtitles for the hearing impaired". Per the definition in WCAG 2.1, to
meet this success criterion, whether called captions or subtitles, they would have to provide
"synchronized visual and / or text alternative for both speech and non-speech audio information needed to
understand the media content" where non-speech information includes "sound effects, music, laughter,
speaker identification and location".
10.1.2.3 Audio description or media alternative (pre-recorded)
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.2.3 Audio Description or Media
Alternative (Prerecorded).
NOTE 1: The WCAG 2.1 definition of "audio description" says that "audio description" is "Also called 'video
description' and 'descriptive narration'".
NOTE 2: Secondary or alternate audio tracks are commonly used for this purpose.
10.1.2.4 Captions (live)
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.2.4 Captions (Live).
NOTE: The WCAG 2.1 definition of "captions" notes that "in some countries, captions are called subtitles". They
are also sometimes referred to as "subtitles for the hearing impaired". Per the definition in WCAG 2.1, to
meet this success criterion, whether called captions or subtitles, they would have to provide
"synchronized visual and / or text alternative for both speech and non-speech audio information needed to
understand the media content" where non-speech information includes "sound effects, music, laughter,
speaker identification and location".
10.1.2.5 Audio description (pre-recorded)
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.2.5 Audio Description
(Prerecorded).
NOTE 1: The WCAG 2.1 definition of "audio description" says that audio description is "Also called 'video
description' and 'descriptive narration'".
NOTE 2: Secondary or alternate audio tracks are commonly used for this purpose.
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10.1.3 Adaptable
10.1.3.1 Info and relationships
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.3.1 Info and Relationships.
NOTE: Where documents contain non-standard structure types (roles), it is best practice to map them to a
standard structure type as a fall-back solution for the reader.
10.1.3.2 Meaningful sequence
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.3.2 Meaningful Sequence.
10.1.3.3 Sensory characteristics
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.3.3 Sensory Characteristics.
10.1.3.4 Orientation
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.3.4 Orientation.
10.1.3.5 Identify input purpose
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.3.5 Identify Input Purpose.
10.1.4 Distinguishable
10.1.4.1 Use of colour
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.4.1 Use of Color.
10.1.4.2 Audio control
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.1.
Table 10.1: Document success criterion: Audio control
If any audio in a document plays automatically for more than 3 seconds, either a mechanism is available to pause
or stop the audio, or a mechanism is available to control audio volume independently from the overall system
volume level.
NOTE 1: Since any part of a document that does not meet this success criterion can interfere with a user's ability
to use the whole document, all content in the document (whether or not it is used to meet other success
criteria) shall meet this success criterion.
NOTE 2: This success criterion is identical to the WCAG 2.1 Success Criterion 1.4.2 Audio Control, replacing "on
a Web page" with "in a document", "any content" with "any part of a document", "whole page" with "whole
document", "on the Web page" with "in the document", removing "See Conformance Requirement 5:
Non-Interference" and adding note 1.
10.1.4.3 Contrast (minimum)
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.4.3 Contrast (Minimum).
10.1.4.4 Resize text
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.4.4 Resize Text.
NOTE 1: Content for which there are software players, viewers or editors with a 200 percent zoom feature would
automatically meet this success criterion when used with such players, unless the content will not work
with zoom.
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NOTE 2: This success criterion is about the ability to allow users to enlarge the text on screen at least up to 200 %
without needing to use assistive technologies. This means that the application provides some means for
enlarging the text 200 % (zoom or otherwise) without loss of content or functionality or that the
application works with the platform features that meet this requirement.
NOTE 3: It is best practice to use only fonts that allow for scaling without loss of quality (e.g. pixelized
presentation). This applies in particular to embedded fonts.
10.1.4.5 Images of text
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 1.4.5 Images of Text.
10.1.4.6 Void
10.1.4.7 Void
10.1.4.8 Void
10.1.4.9 Void
10.1.4.10 Reflow
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.2.
Table 10.2: Document success criterion: Reflow
Content can be presented without loss of information or functionality, and without requiring scrolling in two
dimensions for:
• Vertical scrolling content at a width equivalent to 320 CSS pixels.
• Horizontal scrolling content at a height equivalent to 256 CSS pixels.
Except for parts of the content which require two-dimensional layout for usage or meaning.
NOTE 1: 320 CSS pixels is equivalent to a starting viewport width of 1 280 CSS pixels wide at 400 % zoom. For
documents which are designed to scroll horizontally (e.g. with vertical text), the 256 CSS pixels is
equivalent to a starting viewport height of 1 024 pixels at 400 % zoom.
NOTE 2: Examples of content which require two-dimensional layout are images, maps, diagrams, video, games,
presentations, data tables, and interfaces where it is necessary to keep toolbars in view while
manipulating content.
NOTE 3: This success criterion is identical to the WCAG 2.1 Success Criterion 1.4.10 Reflow replacing the original
WCAG 2.1 notes with notes 1 and 2, above.
10.1.4.11 Non-text contrast
Where ICT is a non-web document, it shall satisfy WCAG 2.1 Success Criterion 1.4.11 Non-text Contrast.
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10.1.4.12 Text spacing
Where ICT is a non-web document that does not have a fixed size content layout area that is essential to the information
being conveyed, it shall satisfy WCAG 2.1 Success Criterion 1.4.12 Text spacing.
10.1.4.13 Content on hover or focus
Where ICT is a non-web document, it shall satisfy WCAG 2.1 Success Criterion 1.4.13 Content on Hover or Focus.
10.2 Operable
10.2.1 Keyboard accessible
10.2.1.1 Keyboard
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 2.1.1 Keyboard.
10.2.1.2 No keyboard trap
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.3.
Table 10.3: Document success criterion: No keyboard trap
If keyboard focus can be moved to a component of the document using a keyboard interface, then focus can be
moved away from that component using only a keyboard interface, and, if it requires more than unmodified arrow or
tab keys or other standard exit methods, the user is advised of the method for moving focus away.
NOTE 1: Since any part of a document that does not meet this success criterion can interfere with a user's ability
to use the whole document, it is necessary for all content in the document (whether or not it is used to
meet other success criteria) to meet this success criterion.
NOTE 2: Standard exit methods may vary by platform. For example, on many desktop platforms, the Escape key
is a standard method for exiting.
NOTE 3: This success criterion is identical to the WCAG 2.1 Success Criterion 2.1.2 No Keyboard Trap replacing
"page" and "Web page" with "document", removing "See Conformance Requirement 5: Non-Interference"
and with the addition of note 2 above and with note 1 above re-drafted to avoid the use of the word
"must".
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10.2.1.3 Void
10.2.1.4 Character key shortcuts
Where ICT is a non-web document, it shall satisfy WCAG 2.1 Success Criterion 2.1.4 Character Key Shortcuts.
10.2.2 Enough time
10.2.2.1 Timing adjustable
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.4.
Table 10.4: Document success criterion: Timing adjustable
For each time limit that is set by the document, at least one of the following is true:
• Turn off: The user is allowed to turn off the time limit before encountering it; or
• Adjust: The user is allowed to adjust the time limit before encountering it over a wide range that is at least
ten times the length of the default setting; or
• Extend: The user is warned before time expires and given at least 20 seconds to extend the time limit with
a simple action (for example, "press the space bar"), and the user is allowed to extend the time limit at
least ten times; or
• Real-time Exception: The time limit is a required part of a real-time event (for example, an auction), and
no alternative to the time limit is possible; or
• Essential Exception: The time limit is essential and extending it would invalidate the activity; or
• 20 Hour Exception: The time limit is longer than 20 hours.
NOTE 1: This success criterion helps ensure that users can complete tasks without unexpected changes in
content or context that are a result of a time limit. This success criterion should be considered in
conjunction with WCAG 2.1 Success Criterion 3.2.1, which puts limits on changes of content or context
as a result of user action.
NOTE 2: This success criterion is identical to the WCAG 2.1 Success Criterion 2.2.1 Timing Adjustable replacing
"the content" with "documents" and with the words "WCAG 2.1" added before the word "Success
Criterion" in note 1 above.
10.2.2.2 Pause, stop, hide
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.5.
Table 10.5: Document success criterion: Pause, stop, hide
For moving, blinking, scrolling, or auto-updating information, all of the following are true:
• Moving, blinking, scrolling: For any moving, blinking or scrolling information that (1) starts automatically,
(2) lasts more than five seconds, and (3) is presented in parallel with other content, there is a mechanism
for the user to pause, stop, or hide it unless the movement, blinking, or scrolling is part of an activity where
it is essential; and
• Auto-updating: For any auto-updating information that (1) starts automatically and (2) is presented in
parallel with other content, there is a mechanism for the user to pause, stop, or hide it or to control the
frequency of the update unless the auto-updating is part of an activity where it is essential.
NOTE 1: For requirements related to flickering or flashing content, refer to WCAG 2.1 Guideline 2.3.
NOTE 2: Since any part of a document that does not meet this success criterion can interfere with a user's ability
to use the whole document, it is necessary for all content in the document (whether it is used to meet
other success criteria or not) to meet this success criterion.
NOTE 3: Content that is updated periodically by software or that is streamed to the user agent is not required to
preserve or present information that is generated or received between the initiation of the pause and
resuming presentation, as this may not be technically possible, and in many situations could be
misleading to do so.
NOTE 4: An animation that occurs as part of a preload phase or similar situation can be considered essential if
interaction cannot occur during that phase for all users and if not indicating progress could confuse users
or cause them to think that content was frozen or broken.
NOTE 5: This success criterion is identical to the WCAG 2.1 Success Criterion 2.2.2 Pause, Stop, Hide replacing
"page" and "Web page" with "document", removing "See Conformance Requirement 5: Non-Interference"
in note 2 of the success criterion, with the words "WCAG 2.1" added before the word "Guideline" in
note 1 above and with note 2 above re-drafted to avoid the use of the word "must".
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10.2.3 Seizures and physical reactions
10.2.3.1 Three flashes or below threshold
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.6.
Table 10.6: Document success criterion: Three flashes or below threshold
Documents do not contain anything that flashes more than three times in any one second period, or the flash is
below the general flash and red flash thresholds.
NOTE 1: Since any part of a document that does not meet this success criterion can interfere with a user's ability
to use the whole document, it is necessary for all content in the document (whether it is used to meet
other success criteria or not) to meet this success criterion.
NOTE 2: This success criterion is identical to the WCAG 2.1 Success Criterion 2.3.1 Three Flashes or Below
Threshold replacing "Web pages" with "documents", "the whole page" with "the whole document", "the
Web page" with "the document" and removing "See Conformance Requirement 5: Non-Interference" and
with note 1 above re-drafted to avoid the use of the word "must".
10.2.4 Navigable
10.2.4.1 Void
NOTE 1: The related web page requirement "Bypass blocks" does not apply to single documents, but to a specific
definition of "sets of documents" that are rare.
NOTE 2: Although not a requirement, the ability to bypass blocks of content that are repeated within documents is
generally considered best practice and addresses user needs.
10.2.4.2 Document titled
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.7.
Table 10.7: Document success criterion: Document titled
Documents have titles that describe topic or purpose.
NOTE 1: The name of a document (e.g. document, media file) is a sufficient title if it describes the topic or
purpose.
NOTE 2: This success criterion is identical to the WCAG 2.1 Success Criterion 2.4.2 Page Titled replacing "Web
pages" with "documents" and with the addition of note 1 above.
10.2.4.3 Focus Order
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.8.
Table 10.8: Document success criterion: Focus order
If a document can be navigated sequentially and the navigation sequences affect meaning or operation, focusable
components receive focus in an order that preserves meaning and operability.
NOTE: This success criterion is identical to the WCAG 2.1 Success Criterion 2.4.3 Focus Order replacing "Web
page" with "document".
10.2.4.4 Link purpose (in context)
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 2.4.4 Link Purpose (In Context).
10.2.4.5 Void
NOTE: The related web page requirement "Multiple ways" does not apply to single documents, but to a specific
definition of "sets of documents" that are rare.
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10.2.4.6 Headings and labels
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 2.4.6 Headings and Labels.
10.2.4.7 Focus visible
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 2.4.7 Focus Visible.
10.2.5 Input modalities
10.2.5.1 Pointer gestures
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.9.
Table 10.9: Document success criterion: Pointer gestures
All functionality that uses multipoint or path-based gestures for operation can be operated with a single pointer
without a path-based gesture, unless a multipoint or path-based gesture is essential.
NOTE 1: This requirement applies to documents that interpret pointer actions (i.e. this does not apply to actions
that are required to operate the user agent or assistive technology).
NOTE 2: This success criterion is identical to the WCAG 2.1 Success Criterion 2.5.1 Pointer Gestures replacing
the original WCAG 2.1 note with note 1 above.
10.2.5.2 Pointer cancellation
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.10.
Table 10.10: Document success criterion: Pointer cancellation
For functionality that can be operated using a single pointer, at least one of the following is true:
• No Down-Event: The down-event of the pointer is not used to execute any part of the function;
• Abort or Undo: Completion of the function is on the up-event, and a mechanism is available to abort the
function before completion or to undo the function after completion;
• Up Reversal: The up-event reverses any outcome of the preceding down-event;
• Essential: Completing the function on the down-event is essential.
NOTE 1: Functions that emulate a keyboard or numeric keypad key press are considered essential.
NOTE 2: This requirement applies to a document that interprets pointer actions (i.e. this does not apply to actions
that are required to operate the user agent or assistive technology).
NOTE 3: This success criterion is identical to the WCAG 2.1 Success Criterion 2.5.2 Pointer Cancellation
replacing the original WCAG 2.1 note with notes 1 and 2 above.
10.2.5.3 Label in name
Where ICT is a non-web document, it shall satisfy WCAG 2.1 Success Criterion 2.5.3 Label in Name.
10.2.5.4 Motion actuation
Where ICT is a non-web document, it shall satisfy WCAG 2.1 Success Criterion 2.5.4 Motion Actuation.
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10.3 Understandable
10.3.1 Readable
10.3.1.1 Language of document
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.11.
Table 10.11: Document success criterion: Language of document
The default human language of each document can be programmatically determined.
NOTE: This success criterion is identical to the WCAG 2.1 Success Criterion 3.1.1 Language of Page replacing
"web page" with "document".
10.3.1.2 Language of parts
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.12.
Table 10.12: Document success criterion: Language of parts
The human language of each passage or phrase in the document can be programmatically determined except for
proper names, technical terms, words of indeterminate language, and words or phrases that have become part of
the vernacular of the immediately surrounding text.
NOTE 1: There are some document technologies where there is no assistive technology supported method for
marking the language for the different passages or phrases in the document, and it would not be possible
to meet this success criterion with those technologies.
NOTE 2: Inheritance is one common method. For example a document provides the language that it is using and it
can be assumed that all of the text or user interface elements within that document will be using the
same language unless it is indicated.
NOTE 3: This success criterion is identical to the WCAG 2.1 Success Criterion 3.1.2 Language of Parts replacing
"content" with "document" and with the addition of notes 1 and 2 above.
10.3.2 Predictable
10.3.2.1 On focus
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 3.2.1 On Focus.
NOTE: Some compound documents and their user agents are designed to provide significantly different viewing
and editing functionality depending upon what portion of the compound document is being interacted
with (e.g. a presentation that contains an embedded spreadsheet, where the menus and toolbars of the user
agent change depending upon whether the user is interacting with the presentation content, or the
embedded spreadsheet content). If the user uses a mechanism other than putting focus on that portion of
the compound document with which they mean to interact (e.g. by a menu choice or special keyboard
gesture), any resulting change of context would not be subject to this success criterion because it was not
caused by a change of focus.
10.3.2.2 On input
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 3.2.2 On Input.
10.3.2.3 Void
NOTE: The related web page requirement "Consistent navigation" does not apply to single documents, but to a
specific definition of "sets of documents" that are rare.
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10.3.2.4 Void
NOTE: The related web page requirement "Consistent identification" does not apply to single documents, but to a
specific definition of "sets of documents" that are rare.
10.3.3 Input assistance
10.3.3.1 Error identification
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 3.3.1 Error Identification.
10.3.3.2 Labels or instructions
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 3.3.2 Labels or Instructions.
10.3.3.3 Error suggestion
Where ICT is a non-web document, it shall satisfy the WCAG 2.1 Success Criterion 3.3.3 Error Suggestion.
10.3.3.4 Error prevention (legal, financial, data)
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.13.
Table 10.13: Document success criterion: Error prevention (legal, financial, data)
For documents that cause legal commitments or financial transactions for the user to occur, that modify or delete
user-controllable data in data storage systems, or that submit user test responses, at least one of the following is
true:
1) Reversible: Submissions are reversible.
2) Checked: Data entered by the user is checked for input errors and the user is provided an opportunity to correct
them.
3) Confirmed: A mechanism is available for reviewing, confirming, and correcting information before finalizing the
submission.
NOTE: This success criterion is identical to the WCAG 2.1 Success Criterion 3.3.4 Error Prevention (Legal,
Financial, Data) replacing "web pages" with "documents".
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10.4 Robust
10.4.1 Compatible
10.4.1.1 Parsing
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.14.
Table 10.14: Document success criterion: Parsing
For documents that use markup languages, in such a way that the markup is separately exposed and available to
assistive technologies and accessibility features of software or to a user-selectable user agent, elements have
complete start and end tags, elements are nested according to their specifications, elements do not contain
duplicate attributes, and any IDs are unique, except where the specifications allow these features.
NOTE 1: Start and end tags that are missing a critical character in their formation, such as a closing angle bracket
or a mismatched attribute value quotation mark are not complete.
NOTE 2: Markup is not always available to assistive technology or to user selectable user agents such as
browsers. In such cases, conformance to this [requirement] would have no impact on accessibility as it
can for web content where it is exposed.
NOTE 3: Examples of markup that is separately exposed and available to assistive technologies and to user
agents include but are not limited to: documents encoded in HTML, ODF, and OOXML. In these
examples, the markup can be parsed entirely in two ways: (a) by assistive technologies which may
directly open the document, (b) by assistive technologies using DOM APIs of user agents for these
document formats.
NOTE 4: This success criterion is identical to the WCAG 2.1 Success Criterion 4.1.1 Parsing replacing "In content
implemented using markup languages" with "For documents that use markup languages, in such a way
that the markup is separately exposed and available to assistive technologies and accessibility features
of software or to a user-selectable user agent" with the addition of notes 2 and 3 above.
10.4.1.2 Name, role, value
Where ICT is a non-web document, it shall satisfy the success criterion in Table 10.15.
Table 10.15: Document success criterion: Name, role, value
For all user interface components (including but not limited to: form elements, links and components generated by
scripts), the name and role can be programmatically determined; states, properties, and values that can be set by
the user can be programmatically set; and notification of changes to these items is available to user agents,
including assistive technologies.
NOTE 1: This success criterion is primarily for software developers who develop or use custom user interface
components. Standard user interface components on most accessibility-supported platforms already
meet this success criterion when used according to specification.
NOTE 2: For document formats that support interoperability with assistive technology, standard user interface
components often meet this success criterion when used according to the general design and
accessibility guidance for the document format.
NOTE 3: This success criterion is identical to the WCAG 2.1 Success Criterion 4.1.2 Name, Role, Value replacing
the original WCAG 2.1 note with: "This success criterion is primarily for software developers who develop
or use custom user interface components. For example, standard user interface components on most
accessibility-supported platforms already meet this success criterion when used according to
specification." and with the addition of note 2 above.
10.4.1.3 Status messages
Where ICT is a non-web document, it shall satisfy WCAG 2.1 Success Criterion 4.1.3 Status Messages.
10.5 Caption positioning
Where ICT is a non-web document that contains synchronized media with captions, the captions should not obscure
relevant information in the synchronized media.
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10.6 Audio description timing
Where ICT is a non-web document that contains synchronized media with audio description, the audio description
should not interfere with relevant audio information in the synchronized media.
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11 Software
11.0 General (informative)
This clause provides requirements for:
• platform software;
• software that provides a user interface including content that is in the software;
• authoring tools;
• software that operates as assistive technology;
• mobile applications.
NOTE 1: User agents are examples of software that provide a user interface. They retrieve, render and facilitate end
user interaction with authored content. User agents play a necessary role in the accessibility of authored
content rendered in the user interface. UAAG 2.0 [i.33] provides additional advice for those who are
creating user agents and want to increase functionality when rendering authored content in an accessible
way.
NOTE 2: The requirements for Web content, including software that is Web content, can be found in clause 9.
NOTE 3: The requirements for documents, that may be presented by user agents, can be found in clause 10.
NOTE 4: Although the accessibility of command line interfaces is not dealt with in the present document,
accessibility may be achieved by context specific requirements, some of which may be found in clauses 5
or 11.
Requirements in clauses 11.1 to 11.5 apply to software:
• that is not a web page;
• not embedded in web pages nor used in the rendering or functioning of the page.
Clause 9 provides requirements for software that is in web pages or that is embedded in web pages and that is used in
the rendering or that is intended to be rendered together with the web page in which it is embedded.
Some requirements in clauses 11.1 to 11.5 have different versions for open or closed functionality. In those cases, the
corresponding clause will be divided into two subclauses.
The success criteria set out in clauses 11.1 to 11.5 are intended to harmonize with the W3C Working Group Note [i.26]
produced by the W3C's WCAG2ICT Task Force.
NOTE 5: Software that provides a user interface includes its own content. Some examples of content in software
include: the controls and text displayed in a menu bar of a graphical user interface application, images
that appear in a toolbar, prompts spoken in an auditory user interface, other user interaction controls, and
other text, graphics or material that is not loaded from outside the software.
NOTE 6: "Void" clauses have been inserted in order to maintain alignment of the numbering in clauses 9, 10 and
11.
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11.1 Perceivable
11.1.1 Text alternatives
11.1.1.1 Non-text content
11.1.1.1.1 Non-text content (open functionality)
Where ICT is non-web software that provides a user interface and that supports access to assistive technologies for
screen reading, it shall satisfy WCAG 2.1 Success Criterion 1.1.1 Non-text Content.
NOTE: CAPTCHAs do not currently appear outside of the Web. However, if they do appear, this guidance is
accurate.
11.1.1.1.2 Non-text content (closed functionality)
Where ICT is non-web software that provides a user interface which is closed to assistive technologies for screen
reading, it shall meet requirement 5.1.3.6 (Speech output for non-text content).
11.1.2 Time-based media
11.1.2.1 Audio-only and video-only (pre-recorded)
11.1.2.1.1 Audio-only and video-only (pre-recorded - open functionality)
Where ICT is non-web software that provides a user interface and that supports access to assistive technologies for
screen reading and where pre-recorded auditory information is not needed to enable the use of closed functions of ICT,
it shall satisfy the WCAG 2.1 Success Criterion 1.2.1 Audio-only and Video-only (Prerecorded).
NOTE: The alternative can be provided directly in the software - or provided in an alternate version that meets
the success criterion.
11.1.2.1.2 Audio-only and video-only (pre-recorded - closed functionality)
11.1.2.1.2.1 Pre-recorded audio-only (closed functionality)
Where ICT is non-web software that provides a user interface which is closed to assistive technologies for screen
reading and where pre-recorded auditory information is needed to enable the use of closed functions of ICT, the
functionality of software that provides a user interface shall meet requirement 5.1.5 (Visual output for auditory
information).
11.1.2.1.2.2 Pre-recorded video-only (closed functionality)
Where ICT is non-web software that provides a user interface which is closed to assistive technologies for screen
reading, it shall meet requirement 5.1.3.7 (Speech output for video information).
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11.1.2.2 Captions (pre-recorded)
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 1.2.2
Captions (Prerecorded).
NOTE: The WCAG 2.1 definition of "captions" notes that "in some countries, captions are called subtitles". They
are also sometimes referred to as "subtitles for the hearing impaired". Per the definition in WCAG 2.1, to
meet this success criterion, whether called captions or subtitles, they would have to provide
"synchronized visual and / or text alternative for both speech and non-speech audio information needed to
understand the media content" where non-speech information includes "sound effects, music, laughter,
speaker identification and location".
11.1.2.3 Audio description or media alternative (pre-recorded)
11.1.2.3.1 Audio description or media alternative (pre-recorded - open functionality)
Where ICT is non-web software that provides a user interface and that supports access to assistive technologies for
screen reading, it shall satisfy the WCAG 2.1 Success Criterion 1.2.3 Audio Description or Media Alternative
(Prerecorded).
NOTE 1: The WCAG 2.1 definition of "audio description" says that "audio description" is "also called 'video
description' and 'descriptive narration'".
NOTE 2: Secondary or alternate audio tracks are commonly used for this purpose.
11.1.2.3.2 Audio description or media alternative (pre-recorded - closed functionality)
Where ICT is non-web software that provides a user interface which is closed to assistive technologies for screen
reading, it shall meet requirement 5.1.3.7 (Speech output for video information).
11.1.2.4 Captions (live)
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 1.2.4
Captions (Live).
NOTE: The WCAG 2.1 definition of "captions" notes that "in some countries, captions are called subtitles". They
are also sometimes referred to as "subtitles for the hearing impaired". Per the definition in WCAG 2.1, to
meet this success criterion, whether called captions or subtitles, they would have to provide
"synchronized visual and / or text alternative for both speech and non-speech audio information needed to
understand the media content" where non-speech information includes "sound effects, music, laughter,
speaker identification and location".
11.1.2.5 Audio description (pre-recorded)
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 1.2.5
Audio Description (Prerecorded).
NOTE 1: The WCAG 2.1 definition of "audio description" says that audio description is "Also called 'video
description' and 'descriptive narration'".
NOTE 2: Secondary or alternate audio tracks are commonly used for this purpose.
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11.1.3 Adaptable
11.1.3.1 Info and relationships
11.1.3.1.1 Info and relationships (open functionality)
Where ICT is non-web software that provides a user interface and that supports access to assistive technologies for
screen reading, it shall satisfy the WCAG 2.1 Success Criterion 1.3.1 Info and Relationships.
NOTE: In software, programmatic determinability is best achieved through the use of accessibility services
provided by platform software to enable interoperability between software and assistive technologies and
accessibility features of software. (see clause 11.5 Interoperability with assistive technology).
11.1.3.1.2 Info and relationships (closed functionality)
Where ICT is non-web software that provides a user interface which is closed to assistive technologies for screen
reading and where information is displayed on the screen, the ICT should provide auditory information that allows the
user to correlate the audio with the information displayed on the screen.
NOTE 1: Many people who are legally blind still have visual ability, and use aspects of the visual display even if it
cannot be fully comprehended. An audio alternative that is both complete and complementary includes all
visual information such as focus or highlighting, so that the audio can be correlated with information that
is visible on the screen at any point in time.
NOTE 2: Examples of auditory information that allows the user to correlate the audio with the information
displayed on the screen include structure and relationships conveyed through presentation.
11.1.3.2 Meaningful sequence
11.1.3.2.1 Meaningful sequence (open functionality)
Where ICT is non-web software that provides a user interface and that supports access to assistive technologies for
screen reading, it shall satisfy the WCAG 2.1 Success Criterion 1.3.2 Meaningful Sequence.
11.1.3.2.2 Meaningful sequence (closed functionality)
Where ICT is non-web software that provides a user interface which is closed to assistive technologies for screen
reading and where information is displayed on the screen, the ICT should provide auditory information that allows the
user to correlate the audio with the information displayed on the screen.
NOTE 1: Many people who are legally blind still have visual ability, and use aspects of the visual display even if it
cannot be fully comprehended. An audio alternative that is both complete and complementary includes all
visual information such as focus or highlighting, so that the audio can be correlated with information that
is visible on the screen at any point in time.
NOTE 2: Examples of auditory information that allows the user to correlate the audio with the information
displayed on the screen include structure and relationships conveyed through presentation.
11.1.3.3 Sensory characteristics
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 1.3.3
Sensory Characteristics.
11.1.3.4 Orientation
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 1.3.4
Orientation.
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11.1.3.5 Identify input purpose
11.1.3.5.1 Identify input purpose (open functionality)
Where ICT is non-web software that provides a user interface and supports access to assistive technologies for screen
reading, it shall satisfy the WCAG 2.1 Success Criterion 1.3.5 Identify Input Purpose.
11.1.3.5.2 Identify input purpose (closed functionality)
Where ICT is non-web software that provides a user interface and is closed to assistive technologies, in at least one
mode of operation the ICT shall present to the user, in an audio form, the purpose of each input field collecting
information about the user when the input field serves a purpose identified in the WCAG 2.1 Input Purposes for User
Interface Components section.
11.1.4 Distinguishable
11.1.4.1 Use of colour
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 1.4.1
Use of Color.
11.1.4.2 Audio control
Where ICT is non-web software that provides a user interface, it shall satisfy the success criterion in Table 11.1.
Table 11.1: Software success criterion: Audio control
If any audio in a software plays automatically for more than 3 seconds, either a mechanism is available to pause or
stop the audio, or a mechanism is available to control audio volume independently from the overall system volume
level.
NOTE 1: Since any part of a software that does not meet this success criterion can interfere with a user's ability to
use the whole software, all content in the software (whether or not it is used to meet other success
criteria) shall meet this success criterion.
NOTE 2: This success criterion is identical to the WCAG 2.1 Success Criterion 1.4.2 Audio Control replacing "on a
Web page" with "in a software", "any content" with "any part of a software", "whole page" with "whole
software", "on the Web page" with "in the software", removing "See Conformance Requirement 5:
Non-Interference" and adding note 1.
11.1.4.3 Contrast (minimum)
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 1.4.3
Contrast (Minimum).
11.1.4.4 Resize text
11.1.4.4.1 Resize text (open functionality)
Where ICT is non-web software that provides a user interface and that supports access to enlargement features of
platform or assistive technology, it shall satisfy the WCAG 2.1 Success Criterion 1.4.4 Resize Text.
NOTE 1: Content for which there are software players, viewers or editors with a 200 percent zoom feature would
automatically meet this success criterion when used with such players, unless the content will not work
with zoom.
NOTE 2: This success criterion is about the ability to allow users to enlarge the text on screen at least up to 200 %
without needing to use assistive technologies. This means that the application provides some means for
enlarging the text 200 % (zoom or otherwise) without loss of content or functionality or that the
application works with the platform features that meet this requirement.
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11.1.4.4.2 Resize text (closed functionality)
Where ICT is non-web software that provides a user interface which is not able to access the enlargement features of
platform or assistive technology, it shall meet requirement 5.1.4 (Functionality closed to text enlargement).
NOTE: Because the text rendering support in a closed environment may be more limited than the support found
in user agents for the Web, meeting the present clause in a closed environment may place a much heavier
burden on the content author.
11.1.4.5 Images of text
11.1.4.5.1 Images of text (open functionality)
Where ICT is non-web software that provides a user interface and that supports access to assistive technologies for
screen reading, it shall satisfy the WCAG 2.1 Success Criterion 1.4.5 Images of Text.
11.1.4.5.2 Images of text (closed functionality)
Where ICT is non-web software that provides a user interface which is closed to assistive technologies for screen
reading, it shall meet requirement 5.1.3.6 (Speech output for non-text content).
11.1.4.6 Void
11.1.4.7 Void
11.1.4.8 Void
11.1.4.9 Void
11.1.4.10 Reflow
Where ICT is non-web software that provides a user interface it shall satisfy the success criterion in Table 11.2.
Table 11.2: Software success criterion: Reflow
Content can be presented without loss of information or functionality, and without requiring scrolling in two
dimensions for:
• Vertical scrolling content at a width equivalent to 320 CSS pixels;
• Horizontal scrolling content at a height equivalent to 256 CSS pixels;
Except for parts of the content which require two-dimensional layout for usage or meaning.
NOTE 1: 320 CSS pixels is equivalent to a starting viewport width of 1 280 CSS pixels wide at 400 % zoom. For
non-web software which are designed to scroll horizontally (e.g. with vertical text), the 256 CSS pixels is
equivalent to a starting viewport height of 1 024 px at 400 % zoom.
NOTE 2: Examples of content which require two-dimensional layout are images, maps, diagrams, video, games,
presentations, data tables, and interfaces where it is necessary to keep toolbars in view while
manipulating content.
NOTE 3: This success criterion is identical to the WCAG 2.1 Success Criterion 1.4.10 Reflow replacing the original
WCAG 2.1 notes with notes 1 and 2, above.
11.1.4.11 Non-text contrast
Where ICT is non-web software that provides a user interface, it shall satisfy WCAG 2.1 Success Criterion 1.4.11 Non-
text Contrast.
11.1.4.12 Text spacing
Where ICT is non-web software that provides a user interface and that does not have a fixed size content layout area
that is essential to the information being conveyed, it shall satisfy WCAG 2.1 Success Criterion 1.4.12 Text spacing.
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11.1.4.13 Content on hover or focus
Where ICT is a non-web software that provides a user interface, it shall satisfy WCAG 2.1 Success Criterion 1.4.13
Content on hover or focus.
11.2 Operable
11.2.1 Keyboard accessible
11.2.1.1 Keyboard
11.2.1.1.1 Keyboard (open functionality)
Where ICT is non-web software that provides a user interface and that supports access to keyboards or a keyboard
interface, it shall satisfy the WCAG 2.1 Success Criterion 2.1.1 Keyboard.
NOTE: This does not imply that software is required to directly support a keyboard or "keyboard interface". Nor
does it imply that software is required to provide a soft keyboard. Underlying platform software may
provide device independent input services to applications that enable operation via a keyboard. Software
that supports operation via such platform device independent services would be operable by a keyboard
and would comply.
11.2.1.1.2 Keyboard (closed functionality)
Where ICT is non-web software that provides a user interface which is closed to keyboards or keyboard interface, it
shall meet requirement 5.1.6.1 (Operation without keyboard interface: Closed functionality).
11.2.1.2 No keyboard trap
Where ICT is non-web software that provides a user interface, it shall satisfy the success criterion in Table 11.3.
Table 11.3: Software success criterion: No keyboard trap
If keyboard focus can be moved to a component of the software using a keyboard interface, then focus can be
moved away from that component using only a keyboard interface, and, if it requires more than unmodified arrow or
tab keys or other standard exit methods, the user is advised of the method for moving focus away.
NOTE 1: Since any part of a software that does not meet this success criterion can interfere with a user's ability to
use the whole software, it is necessary for all content in the software (whether or not it is used to meet
other success criteria) to meet this success criterion.
NOTE 2: Standard exit methods may vary by platform. For example, on many desktop platforms, the Escape key
is a standard method for exiting.
NOTE 3: This success criterion is identical to the WCAG 2.1 Success Criterion 2.1.2 No Keyboard Trap replacing
"content", "page" and "Web page" with "software", removing "See Conformance Requirement 5: Non-
Interference" and with the addition of note 2 above and with note 1 above re-drafted to avoid the use of
the word "shall".
11.2.1.3 Void
11.2.1.4 Character key shortcuts
11.2.1.4.1 Character key shortcuts (open functionality)
Where ICT is non-web software that provides a user interface, it shall satisfy WCAG 2.1 Success Criterion 2.1.4
Character Key Shortcuts.
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11.2.1.4.2 Character key shortcuts (closed functionality)
Where ICT is non-web software that provides a user interface which is closed to keyboards or keyboard interface, it
shall meet requirement 5.1.6.1 (Operation without keyboard interface: Closed functionality).
11.2.2 Enough time
11.2.2.1 Timing adjustable
Where ICT is non-web software that provides a user interface, it shall satisfy the success criterion in Table 11.4.
Table 11.4: Software success criterion: Timing adjustable
For each time limit that is set by the software, at least one of the following is true:
• Turn off: The user is allowed to turn off the time limit before encountering it; or
• Adjust: The user is allowed to adjust the time limit before encountering it over a wide range that is at least
ten times the length of the default setting; or
• Extend: The user is warned before time expires and given at least 20 seconds to extend the time limit with
a simple action (for example, "press the space bar"), and the user is allowed to extend the time limit at
least ten times; or
• Real-time Exception: The time limit is a required part of a real-time event (for example, an auction), and
no alternative to the time limit is possible; or
• Essential Exception: The time limit is essential and extending it would invalidate the activity; or
• 20 Hour Exception: The time limit is longer than 20 hours.
NOTE 1: This success criterion helps ensure that users can complete tasks without unexpected changes in
content or context that are a result of a time limit. This success criterion should be considered in
conjunction with WCAG 2.1 Success Criterion 3.2.1, which puts limits on changes of content or context
as a result of user action.
NOTE 2: This success criterion is identical to the WCAG 2.1 Success Criterion 2.2.1 Timing Adjustable replacing
"the content" with "software" and with the words "WCAG 2.1" added before the word "Success Criterion"
in note 1 above.
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11.2.2.2 Pause, stop, hide
Where ICT is non-web software that provides a user interface, it shall satisfy the success criterion in Table 11.5.
Table 11.5: Software success criterion: Pause, stop, hide
For moving, blinking, scrolling, or auto-updating information, all of the following are true:
• Moving, blinking, scrolling: For any moving, blinking or scrolling information that (1) starts automatically,
(2) lasts more than five seconds, and (3) is presented in parallel with other content, there is a mechanism
for the user to pause, stop, or hide it unless the movement, blinking, or scrolling is part of an activity where
it is essential; and
• Auto-updating: For any auto-updating information that (1) starts automatically and (2) is presented in
parallel with other content, there is a mechanism for the user to pause, stop, or hide it or to control the
frequency of the update unless the auto-updating is part of an activity where it is essential.
NOTE 1: For requirements related to flickering or flashing content, refer to WCAG 2.1 Guideline 2.3.
NOTE 2: This success criteria is applicable to all content in the software (whether or not there is an alternate
accessible mode of operation of the software) since any part of a software that does not meet this
success criterion can interfere with a user's ability to use the whole software (including a user interface
element that enables the user to activate the alternate accessible mode of operation).
NOTE 3: Content that is updated periodically by software or that is streamed to the user agent is not required to
preserve or present information that is generated or received between the initiation of the pause and
resuming presentation, as this may not be technically possible, and in many situations could be
misleading to do so.
NOTE 4: An animation that occurs as part of a preload phase or similar situation can be considered essential if
interaction cannot occur during that phase for all users and if not indicating progress could confuse users
or cause them to think that content was frozen or broken.
NOTE 5: This is to be applied to all content. Any content, whether informative or decorative, that is updated
automatically, blinks, or moves may create an accessibility barrier.
NOTE 6: This success criterion is identical to the WCAG 2.1 Success Criterion 2.2.2 Pause, Stop, Hide replacing
"page" and "Web page" with "software", removing "See Conformance Requirement 5: Non-Interference"
in note 2 of the success criterion, with the words "WCAG 2.1" added before the word "Guideline" in
note 1 above, with note 2 above re-drafted to avoid the use of the word "must" and with the addition of
note 5 above.
11.2.3 Seizures and physical reactions
11.2.3.1 Three flashes or below threshold
Where ICT is non-web software that provides a user interface, it shall satisfy the success criterion in Table 11.6.
Table 11.6: Software success criterion: Three flashes or below threshold
Software does not contain anything that flashes more than three times in any one second period, or the flash is
below the general flash and red flash thresholds.
NOTE 1: This success criteria is applicable to all content in the software (whether or not there is an alternate
accessible mode of operation of the software) since any part of a software that does not meet this
success criterion can interfere with a user's ability to use the whole software (including a user interface
element that enables the user to activate the alternate accessible mode of operation).
NOTE 2: This success criterion is identical to the WCAG 2.1 Success Criterion 2.3.1 Three Flashes or Below
Threshold replacing "Web pages" with "software", "the whole page" with "the whole software", "the Web
page" with "the software" and removing "See Conformance Requirement 5: Non-Interference" and with
note 1 above re-drafted to avoid the use of the word "must".
11.2.4 Navigable
11.2.4.1 Void
NOTE 1: The related web page requirement "Bypass blocks" does not apply to single software programs, but to a
specific definition of "sets of software programs" that are extremely rare.
NOTE 2: Although not a requirement, it is generally considered best practice, and to address user needs, to be able
to bypass blocks of content that are repeated within software.
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11.2.4.2 Void
NOTE 1: The related web page requirement "Page titled" does not apply to single software programs, but to a
specific definition of "sets of software programs" that are extremely rare.
NOTE 2: Although the name of a software product could be a sufficient title if it describes the topic or purpose,
software names are trademarked and trademark names cannot by law be descriptive names. It is not
practical to make software names both unique and descriptive.
11.2.4.3 Focus order
Where ICT is non-web software that provides a user interface, it shall satisfy the success criterion in Table 11.7.
Table 11.7: Software success criterion: Focus order
If software can be navigated sequentially and the navigation sequences affect meaning or operation, focusable
components receive focus in an order that preserves meaning and operability.
NOTE: This success criterion is identical to the WCAG 2.1 Success Criterion 2.4.3 Focus order replacing "Web
page" with "software".
11.2.4.4 Link purpose (in context)
Where ICT is non-web software that provides a user interface, it shall satisfy WCAG 2.1 Success Criterion 2.4.4 Link
Purpose (In Context).
11.2.4.5 Void
NOTE: The related web page requirement for "Multiple ways" applies to "Sets" of web pages. In software, the
equivalent to "sets of web pages" would be "sets of software", but these are extremely rare and an
equivalent is not included in this clause on software requirements.
11.2.4.6 Headings and labels
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 2.4.6
Headings and Labels.
NOTE: In software, headings and labels are used to describe sections of content and controls respectively. In
some cases it may be unclear whether a piece of static text is a heading or a label. But whether treated as a
label or a heading, the requirement is the same: that if they are present they describe the topic or purpose
of the item(s) they are associated with.
11.2.4.7 Focus visible
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 2.4.7
Focus Visible.
11.2.5 Input modalities
11.2.5.1 Pointer gestures
Where ICT is non-web software that provides a user interface, it shall satisfy the success criterion in Table 11.8.
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Table 11.8: Software success criterion: Pointer gestures
All functionality that uses multipoint or path-based gestures for operation can be operated with a single pointer
without a path-based gesture, unless a multipoint or path-based gesture is essential.
NOTE 1: This requirement applies to non-web software that interprets pointer actions (i.e. this does not apply to
actions that are required to operate the user agent or assistive technology).
NOTE 2: This success criterion is identical to the WCAG 2.1 Success Criterion 2.5.1 Pointer Gestures replacing
the original WCAG 2.1 note with note 1 above.
11.2.5.2 Pointer cancellation
Where ICT is non-web software that provides a user interface, it shall satisfy the success criterion in Table 11.9.
Table 11.9: Software success criterion: Pointer cancellation
For functionality that can be operated using a single pointer, at least one of the following is true:
• No Down-Event: The down-event of the pointer is not used to execute any part of the function.
• Abort or Undo: Completion of the function is on the up-event, and a mechanism is available to abort the
function before completion or to undo the function after completion.
• Up Reversal: The up-event reverses any outcome of the preceding down-event.
• Essential: Completing the function on the down-event is essential.
NOTE 1: Functions that emulate a keyboard or numeric keypad key press are considered essential.
NOTE 2: This requirement applies to non-web software that interprets pointer actions (i.e. this does not apply to
actions that are required to operate the user agent or assistive technology).
NOTE 3: This success criterion is identical to the WCAG 2.1 Success Criterion 2.5.2 Pointer Cancellation
replacing the original WCAG 2.1 note with notes 1 and 2 above.
11.2.5.3 Label in name
11.2.5.3.1 Label in name (open functionality)
Where ICT is non-web software that provides a user interface, it shall satisfy WCAG 2.1 Success Criterion 2.5.3 Label
in Name.
11.2.5.3.2 Label in name (closed functionality)
Where ICT is non-web software that provides a user interface which is closed to assistive technologies for screen
reading, it should meet requirement 5.1.3.3 (Auditory output correlation).
11.2.5.4 Motion actuation
Where ICT is non-web software that provides a user interface, it shall satisfy WCAG 2.1 Success Criterion 2.5.4
Motion Actuation.
11.3 Understandable
11.3.1 Readable
11.3.1.1 Language of software
11.3.1.1.1 Language of software (open functionality)
Where ICT is non-web software that provides a user interface and that supports access to assistive technologies for
screen reading, it shall satisfy the success criterion in Table 11.10.
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Table 11.10: Software success criterion: Language of software
The default human language of software can be programmatically determined.
NOTE 1: Where software platforms provide a "locale / language" setting, applications that use that setting and
render their interface in that "locale / language" would comply with this success criterion. Applications
that do not use the platform "locale / language" setting but instead use an accessibility-supported method
for exposing the human language of the software would also comply with this success criterion.
Applications implemented in technologies where assistive technologies cannot determine the human
language and that do not support the platform "locale / language" setting may not be able to meet this
success criterion in that locale / language.
NOTE 2: This success criterion is identical to the WCAG 2.1 Success Criterion 3.1.1 Language of page, replacing
"each web page" with "software" and with the addition of note 1 above.
11.3.1.1.2 Language of software (closed functionality)
Where ICT is non-web software that provides a user interface which is closed to assistive technologies for screen
reading, it shall meet requirement 5.1.3.14 (Spoken languages).
11.3.1.2 Void
NOTE: To apply the related web page requirement for "Language of parts" to software would require the
marking-up of all text in all locations within the software. This would be impossible so an equivalent is
not included in this clause on software requirements.
11.3.2 Predictable
11.3.2.1 On focus
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 3.2.1 On
Focus.
NOTE: Some compound documents and their user agents are designed to provide significantly different viewing
and editing functionality depending upon what portion of the compound document is being interacted
with (e.g. a presentation that contains an embedded spreadsheet, where the menus and toolbars of the user
agent change depending upon whether the user is interacting with the presentation content, or the
embedded spreadsheet content). If the user uses a mechanism other than putting focus on that portion of
the compound document with which they mean to interact (e.g. by a menu choice or special keyboard
gesture), any resulting change of context would not be subject to this success criterion because it was not
caused by a change of focus.
11.3.2.2 On input
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 3.2.2 On
Input.
11.3.2.3 Void
NOTE: The related web page requirement for "Consistent navigation" applies to "Sets" of web pages. While
consistency within software is desirable, "sets of software" in the same sense as "sets of web pages", are
extremely rare and an equivalent is not included in this clause on software requirements.
11.3.2.4 Void
NOTE: The related web page requirement for "Consistent identification" applies to "Sets" of web pages. In
software, the equivalent to "sets of web pages" would be "sets of software", but these are extremely rare
and an equivalent is not included in this clause on software requirements.
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11.3.3 Input assistance
11.3.3.1 Error identification
11.3.3.1.1 Error identification (open functionality)
Where ICT is non-web software that provides a user interface and that supports access to assistive technologies for
screen reading, it shall satisfy the WCAG 2.1 Success Criterion 3.3.1 Error Identification.
11.3.3.1.2 Error Identification (closed functionality)
Where ICT is non-web software that provides a user interface which is closed to assistive technologies for screen
reading, it shall meet requirement 5.1.3.15 (Non-visual error identification).
11.3.3.2 Labels or instructions
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 3.3.2
Labels or Instructions.
11.3.3.3 Error suggestion
Where ICT is non-web software that provides a user interface, it shall satisfy the WCAG 2.1 Success Criterion 3.3.3
Error Suggestion.
11.3.3.4 Error prevention (legal, financial, data)
Where ICT is non-web software that provides a user interface, it shall satisfy the success criterion in Table 11.11.
Table 11.11: Software success criterion: Error prevention (legal, financial, data)
For software that cause legal commitments or financial transactions for the user to occur, that modify or delete user-
controllable data in data storage systems, or that submit user test responses, at least one of the following is true:
1) Reversible: Submissions are reversible.
2) Checked: Data entered by the user is checked for input errors and the user is provided an opportunity to correct
them.
3) Confirmed: A mechanism is available for reviewing, confirming, and correcting information before finalizing the
submission.
NOTE: This success criterion is identical to the WCAG 2.1 Success Criterion 3.3.4 Error Prevention (Legal,
Financial, Data) replacing "web pages" with "software".
11.4 Robust
11.4.1 Compatible
11.4.1.1 Parsing
11.4.1.1.1 Parsing (open functionality)
Where ICT is non-web software that provides a user interface and that supports access to any assistive technologies, it
shall satisfy the success criterion in Table 11.12.
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Table 11.12: Software success criterion: Parsing
For software that uses markup languages, in such a way that the markup is separately exposed and available to
assistive technologies and accessibility features of software or to a user-selectable user agent, elements have
complete start and end tags, elements are nested according to their specifications, elements do not contain
duplicate attributes, and any IDs are unique, except where the specifications allow these features.
NOTE 1: Start and end tags that are missing a critical character in their formation, such as a closing angle bracket
or a mismatched attribute value quotation mark are not complete.
NOTE 2: Markup is not always available to assistive technology or to user selectable user agents such as
browsers. In such cases, conformance to this [requirement] would have no impact on accessibility as it
can for web content where it is exposed.
NOTE 3: Examples of markup that is separately exposed and available to assistive technologies and to user
agents include but are not limited to: documents encoded in HTML, ODF, and OOXML. In these
examples, the markup can be parsed entirely in two ways: (a) by assistive technologies which may
directly open the document, (b) by assistive technologies using DOM APIs of user agents for these
document formats.
NOTE 4: Examples of markup used internally for persistence of the software user interface that are never exposed
to assistive technology include but are not limited to: XUL, and FXML. In these examples assistive
technology only interacts with the user interface of generated software.
NOTE 5: This success criterion is identical to the WCAG 2.1 Success Criterion 4.1.1 Parsing replacing "In content
implemented using markup languages" with "For software that uses markup languages, in such a way
that the markup is separately exposed and available to assistive technologies and accessibility features
of software or to a user-selectable user agent" with the addition of notes 2, 3 and 4 above.
11.4.1.1.2 Parsing (closed functionality)
Not applicable.
NOTE: Where ICT is non-web software that provides a user interface which is closed to all assistive technology it
does not have to meet the "Parsing" success criterion in Table 11.12 because the intent of this success
criterion is to provide consistency so that different user agents or assistive technologies will yield the
same result.
11.4.1.2 Name, role, value
11.4.1.2.1 Name, role, value (open functionality)
Where ICT is non-web software that provides a user interface and that supports access to any assistive technologies, it
shall satisfy the success criterion in Table 11.13.
Table 11.13: Software success criterion: Name, role, value
For all user interface components (including but not limited to: form elements, links and components generated by
scripts), the name and role can be programmatically determined; states, properties, and values that can be set by
the user can be programmatically set; and notification of changes to these items is available to user agents,
including assistive technologies.
NOTE 1: This success criterion is primarily for software developers who develop or use custom user interface
components. Standard user interface components on most accessibility-supported platforms already
meet this success criterion when used according to specification.
NOTE 2: For conforming to this success criterion, it is usually best practice for software user interfaces to use the
accessibility services provided by platform software. These accessibility services enable interoperability
between software user interfaces and both assistive technologies and accessibility features of software
in standardised ways. Most platform accessibility services go beyond programmatic exposure of name
and role, and programmatic setting of states, properties and values (and notification of same), and
specify additional information that could or should be exposed and / or set (for instance, a list of the
available actions for a given user interface component, and a means to programmatically execute one of
the listed actions).
NOTE 3: This success criterion is identical to the WCAG 2.1 Success Criterion 4.1.2 Name, Role, Value replacing
the original WCAG 2.1 note with: "This success criterion is primarily for software developers who develop
or use custom user interface components. Standard user interface components on most accessibility-
supported platforms already meet this success criterion when used according to specification." and the
addition of note 2 above.
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11.4.1.2.2 Name, role, value (closed functionality)
Not applicable.
NOTE: Where ICT is non-web software that provides a user interface which is closed to all assistive technology it
does not have to meet the "Name, role, value" success criterion in Table 11.13 because this success
criterion requires information in a programmatically determinable form.
11.4.1.3 Status messages
11.4.1.3.1 Status messages (open functionality)
Where ICT is non-web software, it shall satisfy WCAG 2.1 Success Criterion 4.1.3 Status Messages.
11.4.1.3.2 Status messages (closed functionality)
Not applicable.
11.5 Interoperability with assistive technology
11.5.1 Closed functionality
Where the closed functionality of software conforms to clause 5.1 (Closed functionality) it shall not be required to
conform with clause 11.5.2 to clause 11.5.2.17.
11.5.2 Accessibility services
11.5.2.1 Platform accessibility service support for software that provides a user
interface
Platform software shall provide a set of documented platform services that enable software that provides a user interface
running on the platform software to interoperate with assistive technology.
Where a user interface concept corresponding to one of the clauses 11.5.2.5 to 11.5.2.17 is supported within the
software environment, the platform software should support that requirement. For example, selection attributes from
clause 11.5.2.14 (Modification of focus and selection attributes) may not exist in environments that do not allow
selection, which is most commonly associated with copy and paste.
NOTE 1: These define the minimum functionality of software providing user interfaces when using platform
services.
NOTE 2: In some platforms these services may be called accessibility services, but in some other platforms these
services may be provided as part of the user interface services.
NOTE 3: User interface services that provide accessibility support by default are considered to be part of the
services provided to conform to this clause (e.g. the service for creating a new user interface element
provides role, state, boundary, name and description).
NOTE 4: To comply with this requirement the platform software can provide its own set of services or expose the
services provided by its underlying platform layers, if those services conform to this requirement.
NOTE 5: Within specific programming environments, the technical attributes associated with the user interface
properties described in clauses 11.5.2.5 to 11.5.2.17 might have different names than those used within
the clauses.
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11.5.2.2 Platform accessibility service support for assistive technologies
Platform software shall provide a set of documented platform accessibility services that enable assistive technology to
interoperate with software that provides a user interface running on the platform software.
Where a user interface concept corresponding to one of the clauses 11.5.2.5 to 11.5.2.17 is supported within the
software environment, the platform software should support that requirement. For example, selection attributes from
clause 11.5.2.14 (Modification of focus and selection attributes) may not exist in environments that do not allow
selection, which is most commonly associated with copy and paste.
NOTE 1: These define the minimum functionality available to assistive technologies when using platform services.
NOTE 2: The definition of platform in clause 3.1 applies to software that provides services to other software,
including but not limited to, operating systems, web browsers, virtual machines.
NOTE 3: In some platforms these services may be called accessibility services, but in some other platforms these
services may be provided as part of the user interface services.
NOTE 4: Typically these services belong to the same set of services that are described in clause 11.5.2.1.
NOTE 5: To comply with this requirement the platform software can provide its own set of services or expose the
services provided by its underlying platform layers, if those services conform to this requirement.
11.5.2.3 Use of accessibility services
Where the software provides a user interface it shall use the applicable documented platform accessibility services. If
the documented platform accessibility services do not allow the software to meet the applicable requirements of
clauses 11.5.2.5 to 11.5.2.17, then software that provides a user interface shall use other documented services to
interoperate with assistive technology.
NOTE: The term "documented platform accessibility services" refers to the set of services provided by the
platform according to clauses 11.5.2.1 and 11.5.2.2.
It is best practice to develop software using toolkits that automatically implement the underlying platform accessibility
services.
11.5.2.4 Assistive technology
Where the ICT is assistive technology it shall use the documented platform accessibility services.
NOTE 1: The term "documented platform accessibility services" refers to the set of services provided by the
platform according to clauses 11.5.2.1 and 11.5.2.2.
NOTE 2: Assistive technology can also use other documented accessibility services.
11.5.2.5 Object information
Where the software provides a user interface it shall, by using the services as described in clause 11.5.2.3, make the user
interface elements' role, state(s), boundary, name, and description programmatically determinable by assistive
technologies.
11.5.2.6 Row, column, and headers
Where the software provides a user interface it shall, by using the services as described in clause 11.5.2.3, make the row
and column of each cell in a data table, including headers of the row and column if present, programmatically
determinable by assistive technologies.
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11.5.2.7 Values
Where the software provides a user interface, it shall, by using the services as described in clause 11.5.2.3, make the
current value of a user interface element and any minimum or maximum values of the range, if the user interface
element conveys information about a range of values, programmatically determinable by assistive technologies.
11.5.2.8 Label relationships
Where the software provides a user interface it shall expose the relationship that a user interface element has as a label
for another element, or of being labelled by another element, using the services as described in clause 11.5.2.3, so that
this information is programmatically determinable by assistive technologies.
11.5.2.9 Parent-child relationships
Where the software provides a user interface it shall, by using the services as described in clause 11.5.2.3, make the
relationship between a user interface element and any parent or children elements programmatically determinable by
assistive technologies.
11.5.2.10 Text
Where the software provides a user interface it shall, by using the services as described in clause 11.5.2.3, make the text
contents, text attributes, and the boundary of text rendered to the screen programmatically determinable by assistive
technologies.
11.5.2.11 List of available actions
Where the software provides a user interface it shall, by using the services as described in clause 11.5.2.3, make a list of
available actions that can be executed on a user interface element, programmatically determinable by assistive
technologies.
11.5.2.12 Execution of available actions
Where permitted by security requirements, software that provides a user interface shall, by using the services as
described in clause 11.5.2.3, allow the programmatic execution of the actions exposed according to clause 11.5.2.11 by
assistive technologies.
NOTE 1: In some cases the security requirements imposed on a software product may forbid external software from
interfering with the ICT product. Examples of systems under strict security requirements are systems
dealing with intelligence activities, cryptologic activities related to national security, command and
control of military forces.
NOTE 2: Assistive technologies may be required to maintain the same level of security as the standard input
mechanisms supported by the platform.
11.5.2.13 Tracking of focus and selection attributes
Where software provides a user interface it shall, by using the services as described in clause 11.5.2.3, make
information and mechanisms necessary to track focus, text insertion point, and selection attributes of user interface
elements programmatically determinable by assistive technologies.
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11.5.2.14 Modification of focus and selection attributes
Where permitted by security requirements, software that provides a user interface shall, by using the services as
described in clause 11.5.2.3, allow assistive technologies to programmatically modify focus, text insertion point, and
selection attributes of user interface elements where the user can modify these items.
NOTE 1: In some cases the security requirements imposed on a software product may forbid external software from
interfering with the ICT product and so this requirement would not apply. Examples of systems under
strict security requirements are systems dealing with intelligence activities, cryptologic activities related
to national security, command and control of military forces.
NOTE 2: Assistive technologies may be required to maintain the same level of security as the standard input
mechanisms supported by the platform.
11.5.2.15 Change notification
Where software provides a user interface it shall, by using the services as described in clause 11.5.2.3, notify assistive
technologies about changes in those programmatically determinable attributes of user interface elements that are
referenced in requirements 11.5.2.5 to 11.5.2.11 and 11.5.2.13.
11.5.2.16 Modifications of states and properties
Where permitted by security requirements, software that provides a user interface shall, by using the services as
described in clause 11.5.2.3, allow assistive technologies to programmatically modify states and properties of user
interface elements, where the user can modify these items.
NOTE 1: In some cases the security requirements imposed on a software product may forbid external software from
interfering with the ICT product and so this requirement would not apply. Examples of systems under
strict security requirements are systems dealing with intelligence activities, cryptologic activities related
to national security, command and control of military forces.
NOTE 2: Assistive technologies may be required to maintain the same level of security as the standard input
mechanisms supported by the platform.
11.5.2.17 Modifications of values and text
Where permitted by security requirements, software that provides a user interface shall, by using the services as
described in clause 11.5.2.3, allow assistive technologies to modify values and text of user interface elements using the
input methods of the platform, where a user can modify these items without the use of assistive technology.
NOTE 1: In some cases the security requirements imposed on a software product may forbid external software from
interfering with the ICT product and so this requirement would not apply. Examples of systems under
strict security requirements are systems dealing with intelligence activities, cryptologic activities related
to national security, command and control of military forces.
NOTE 2: Assistive technologies may be required to maintain the same level of security as the standard input
mechanisms supported by the platform.
11.6 Documented accessibility usage
11.6.1 User control of accessibility features
Where software is a platform it shall provide sufficient modes of operation for user control over those platform
accessibility features documented as intended for users.
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11.6.2 No disruption of accessibility features
Where software provides a user interface it shall not disrupt those documented accessibility features that are defined in
platform documentation except when requested to do so by the user during the operation of the software.
11.7 User preferences
Where software is not designed to be isolated from its platform, and provides a user interface, that user interface shall
follow the values of the user preferences for platform settings for: units of measurement, colour, contrast, font type, font
size, and focus cursor except where they are overridden by the user.
NOTE 1: Software that is isolated from its underlying platform has no access to user settings in the platform and
thus cannot adhere to them.
NOTE 2: For web content, the underlying platform is the user agent.
NOTE 3: This does not preclude the software from having additional values for a setting as long as there is one
mode where the application will follow the system settings even if more restricted.
11.8 Authoring tools
11.8.0 General (informative)
For those creating web content authoring tools, ATAG 2.0 [i.32] provides information that can be of interest to those
who want to go beyond these requirements.
NOTE: This is applicable both to standalone and to web based authoring tools.
11.8.1 Content technology
Authoring tools shall conform to clauses 11.8.2 to 11.8.5 to the extent that information required for accessibility is
supported by the format used for the output of the authoring tool.
11.8.2 Accessible content creation
Authoring tools shall enable and guide the production of content that conforms to clauses 9 (Web content) or 10
(Non-Web content) as applicable.
NOTE: Authoring tools may rely on additional tools where conformance with specific requirements is not
achievable by a single tool. For example, a video editing tool may enable the creation of video files for
distribution via broadcast television and the web, but authoring of caption files for multiple formats may
be provided by a different tool.
11.8.3 Preservation of accessibility information in transformations
If the authoring tool provides restructuring transformations or re-coding transformations, then accessibility information
shall be preserved in the output if equivalent mechanisms exist in the content technology of the output.
NOTE 1: Restructuring transformations are transformations in which the content technology stays the same, but the
structural features of the content are changed (e.g. linearizing tables, splitting a document into pages).
NOTE 2: Re-coding transformations are transformations in which the technology used to encode the content is
changed.
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11.8.4 Repair assistance
If the accessibility checking functionality of an authoring tool can detect that content does not meet a requirement of
clauses 9 (Web) or 10 (Non-web documents) as applicable, then the authoring tool shall provide repair suggestion(s).
NOTE: This does not preclude automated and semi-automated repair which is possible (and encouraged) for
many types of content accessibility problems.
11.8.5 Templates
When an authoring tool provides templates, at least one template that supports the creation of content that conforms to
the requirements of clauses 9 (Web) or 10 (Non-web documents) as applicable shall be available and identified as such.
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12 Documentation and support services
12.1 Product documentation
12.1.1 Accessibility and compatibility features
Product documentation provided with the ICT whether provided separately or integrated within the ICT shall list and
explain how to use the accessibility and compatibility features of the ICT.
NOTE 1: Accessibility and compatibility features include accessibility features that are built-in and accessibility
features that provide compatibility with assistive technology.
NOTE 2: It is best practice to use WebSchemas/Accessibility 2.0 [i.38] to provide meta data on the accessibility of
the ICT.
NOTE 3: The accessibility statement and help pages are both examples of the provision of product information.
12.1.2 Accessible documentation
Product documentation provided with the ICT shall be made available in at least one of the following electronic
formats:
a) a Web format that conforms to the requirements of clause 9; or
b) a non-web format that conforms to the requirements of clause 10.
NOTE 1: This does not preclude the possibility of also providing the product documentation in other formats
(electronic, printed or audio) that are not accessible.
NOTE 2: It also does not preclude the possibility of providing alternate formats that meet the needs of some
specific type of users (e.g. Braille documents for blind people or easy-to-read information for persons
with limited cognitive, language and learning abilities).
NOTE 3: Where documentation is incorporated into the ICT, the documentation falls under the requirements for
accessibility in the present document.
NOTE 4: A user agent that supports automatic media conversion would be beneficial to enhancing accessibility.
12.2 Support services
12.2.1 General (informative)
ICT support services include, but are not limited to: help desks, call centres, technical support, relay services and
training services.
12.2.2 Information on accessibility and compatibility features
ICT support services shall provide information on the accessibility and compatibility features that are mentioned in the
product documentation.
NOTE: Accessibility and compatibility features include accessibility features that are built-in and accessibility
features that provide compatibility with assistive technology.
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12.2.3 Effective communication
ICT support services shall accommodate the communication needs of individuals with disabilities either directly or
through a referral point.
12.2.4 Accessible documentation
Documentation provided by support services shall be made available in at least one of the following electronic formats:
a) a Web format that conforms to clause 9; or
b) a non-web format that conforms to clause 10.
NOTE 1: This does not preclude the possibility of also providing the documentation in other formats (electronic or
printed) that are not accessible.
NOTE 2: It also does not preclude the possibility of providing alternate formats that meet the needs of some
specific type of users (e.g. Braille documents for blind people or easy-to-read information for persons
with limited cognitive, language and learning abilities).
NOTE 3: Where the support documentation is incorporated into the ICT, the documentation falls under the
requirements for accessibility in the present document.
NOTE 4: A user agent that supports automatic media conversion would be beneficial to enhancing accessibility.
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13 ICT providing relay or emergency service access
13.1 Relay services requirements
13.1.1 General (informative)
Relay services enable users of different modes of communication e.g. text, sign, speech, to interact remotely through
ICT with two-way communication by providing conversion between the modes of communication, normally by a
human operator.
It is best practice to meet the applicable relay service requirements of ETSI ES 202 975 [i.5].
13.1.2 Text relay services
Where ICT is intended to provide a text relay service, the text relay service shall enable text users and speech users to
interact by providing conversion between the two modes of communication.
13.1.3 Sign relay services
Where ICT is intended to provide a sign relay service, the sign relay service shall enable sign language users and speech
users to interact by providing conversion between the two modes of communication.
NOTE: Sign relay services are also sometimes referred to as sign language relay services or video relay services.
13.1.4 Lip-reading relay services
Where ICT is intended to provide a lip-reading relay service, the lip-reading service shall enable lip-readers and voice
telephone users to interact by providing conversion between the two modes of communication.
13.1.5 Captioned telephony services
Where ICT is intended to provide a captioned telephony service, the captioned telephony service shall assist a deaf or
hard of hearing user in a spoken dialogue by providing text captions translating the incoming part of the conversation.
13.1.6 Speech to speech relay services
Where ICT is intended to provide a speech to speech relay service, the speech to speech relay service shall enable
telephone users who are speech impaired, have limited cognitive, language and learning abilities, as well as any other
user, to communicate by providing assistance between them.
13.2 Access to relay services
Where ICT systems support two-way communication, and the system is specified for use with relay services, access to
those relay services shall not be prevented for outgoing and incoming calls involving: voice, RTT, or video, either
individually or in combinations supported by both the relay service and the ICT system.
NOTE 1: The purpose of this requirement is to achieve functionally equivalent communication access by persons
with disabilities.
NOTE 2: The system may be specified as needing to work with relay services by, for example: procurers,
regulators, or product specifications.
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13.3 Access to emergency services
Where ICT systems support two-way communication, and the system is specified for use with emergency services,
access to those emergency services shall not be prevented for outgoing and incoming calls involving: voice, RTT, or
video, either individually or in combinations supported by both the emergency service and the ICT system.
NOTE 1: The purpose of this requirement is to achieve functionally equivalent communication access to the
emergency service by persons with disabilities.
NOTE 2: The system may be specified as needing to work with emergency services by, for example: procurers,
regulators, or product specifications.
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14 Conformance
Conformance to the present document is achieved by meeting all the applicable requirements, these are clauses
containing the word "shall". Those clauses containing the word "should" are recommendations and are not required for
conformance.
All clauses except those in clause 12 are self-scoping. This means they are introduced with the phrase 'Where ICT <pre
condition>'. A requirement is met when the pre-condition is true and the corresponding test (in Annex C) is passed.
When one of the pre-conditions is false the requirement is not applicable. Consequently, the result of the tests in
Annex C can be: not applicable, pass, fail, or (in exceptional circumstances) not testable.
ICT is often comprised of an assembly of two or more items of ICT. In some cases, two or more interoperable items of
ICT may together meet more requirements of the standard when one item complements the functionality of the other
and the sum together meets more of the accessibility requirements. However, combining two items of ICT, both of
which fail to meet any particular requirement, will not lead to a combined ICT system that meets that requirement.
The present document does not prioritize requirements.
NOTE 1: Conformance with the accessibility requirements could be affected by subsequent implementation or
maintenance.
NOTE 2: Sampling is frequently required on complex ICT when there are too many instances of the object to be
tested. The present document cannot recommend specific ICT evaluation sampling techniques as these
are context specific.
The inherent nature of certain situations makes it impossible to make reliable and definitive statements that accessibility
requirements have been met. In those situations therefore, the requirements in the present document are not applicable:
• when the product is in a failure, repair or maintenance state where the ordinary set of input or output functions
are not available;
• during those parts of start-up, shutdown, and other state transitions that can be completed without user
interaction.
NOTE 3: Even in the above situations, it is best practice to apply requirements in the present document wherever it
is feasible and safe to do so.
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Annex A (informative):
Relationship between the present document and the
essential requirements of Directive 2016/2102
The present document has been prepared under the Commission's standardisation request C(2017)2585 final [i.27] to
provide one voluntary means of conforming to the essential requirements of Directive 2016/2102 on the accessibility of
the websites and mobile applications of public sector bodies [i.28].
Once the present document is cited in the Official Journal of the European Union under that Directive, conformance
with the normative clauses of the present document given in Tables A.1 and A.2 confers, within the limits of the scope
of the present document, a presumption of conformity with the corresponding essential requirements of that Directive
and associated EFTA regulations.
The requirements listed in Table A.1 apply to:
• web pages (as defined in clause 3.1);
• documents that are web pages;
• documents that are embedded in web pages and that are used in the rendering or that are intended to be
rendered together with the web page in which they are embedded;
• documents, including forms, that are downloadable from web pages but are neither embedded nor rendered
together with the web page from which they are provided;
• software that is a web page; or
• software that is embedded in web pages and that is used in the rendering or that is intended to be rendered
together with the web page in which it is embedded.
The requirements listed in Table A.2 apply to mobile applications that provide a user interface, including content (such
as documents and forms) that is in the software or provided by the software.
NOTE 1: According to Directive 2016/2102 [i.28]: "Content of websites and mobile applications includes textual as
well as non-textual information, downloadable documents and forms, and two-way interaction such as the
processing of digital forms and the completion of authentication, identification and payment processes".
NOTE 2: Annex A is a required element in all Harmonised standards. Its purpose is to explain how the essential
requirements of a Directive can be met. Tables A.1 and A.2 are therefore restricted to those elements that
relate to the essential requirements of Directive 2016/2102 [i.28].
NOTE 3: Annex A describes how the standard relates to the European Web Accessibility Directive. Apart from the
minimum requirements in clauses 9, 10 and 11, some of the requirements in clauses 5, 6, 7 and 12 can
also be relevant to fulfill the Directive in specific situations. The tables in Annex A show which
requirements are relevant.
NOTE 4: Because the Web Accessibility Directive (EU) 2016/2102 "does not apply to live time-based media", the
following requirements are not listed in Tables A.1 and A.2. They are, however, necessary requirements
for making live streaming media accessible:
â–ª 9.1.2.4 Captions (live)
â–ª 10.1.2.4 Captions (live)
â–ª 11.1.2.4 Captions (live).
ETSI CEN CENELEC
90
EN 301 549 V3.2.1 (2021-03)
Key to Tables A.1 and A.2 columns:
Requirement:
No A unique identifier for one row of the table which may be used to identify a requirement.
Essential requirements of Directive
Identification of article(s) defining the requirement in the Directive.
Clause(s) of the present document
Identification of clause(s) defining the requirement in the present document unless another
document is referenced explicitly.
Requirement Conditionality:
U/C "U" indicates that conformance with the clause is unconditionally required.
"C" indicates that conformance with the clause is required only if the specified condition is met.
Condition For conditional requirements this column describes the condition that has to be met for
conformance with the clause to be a requirement.
Assessment:
Indicates the clause of the present document that contains the relevant assessment method.
Presumption of conformity stays valid only as long as a reference to the present document is maintained in the list
published in the Official Journal of the European Union. Users of the present document should consult frequently the
latest list published in the Official Journal of the European Union.
Other Union legislation may be applicable to the product(s) falling within the scope of the present document.
Table A.1: Web Content - relationship between the present document and
the essential requirements of Directive 2016/2102/EU
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of
the present
document
Perceivable
Operable
Understandable
Robust
1
5.2 Activation of accessibility
features
✓
✓
✓
✓
C
Where web content has documented
accessibility features
C.5.2
2
5.3 Biometrics
-
✓
-
-
C
Where web content uses biological
characteristics
C.5.3
3
5.4 Preservation of accessibility
information during conversion
✓
-
✓
✓
C
Where web content converts
information or communication
C.5.4
4
6.1 Audio bandwidth for speech
✓
-
-
-
C
Where web pages provide two-way
voice communication
C.6.1
5
6.2.1.1 RTT communication
✓
-✓
-
-
C
Where web pages provide a means
for two-way voice communication
C.6.2.1.1
6
6.2.1.2 Concurrent voice and
text
✓
✓
C
Where web pages provide a means
for two-way voice communication and
for users to communicate by RTT
C.6.2.1.2
7
6.2.2.1 Visually distinguishable
display
✓
-
-
-
C
Where web pages have RTT send
and receive capabilities
C.6.2.2.1
ETSI CEN CENELEC
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EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of
the present
document
Perceivable
Operable
Understandable
Robust
8
6.2.2.2 Programmatically
determinable send and receive
direction
✓
C
Where web pages have RTT send
and receive capabilities
C.6.2.2.2
9
6.2.2.3 Speaker identification
✓
C
Where web pages have RTT
capabilities, and provide speaker
identification for voice
C.6.2.2.3
10
6.2.2.4 Visual indicator of Audio
with RTT
✓
C
Where web pages provide two-way
voice communication, and have RTT
capabilities
C.6.2.2.4
11
6.2.3 Interoperability item a)
✓
-
-
-
C
Where web pages with RTT
functionality interoperate with other
ICT with RTT functionality (as
required by clause 6.2.1.1)
C.6.2.3.a
12
6.2.3 Interoperability item b)
✓
-
-
-
C
Where web pages with RTT
functionality interoperate with other
ICT with RTT functionality (as
required by clause 6.2.1.1)
C.6.2.3.b
13
6.2.3 Interoperability item c)
✓
-
-
-
C
Where web pages with RTT
functionality interoperate with other
ICT with RTT functionality (as
required by clause 6.2.1.1)
C.6.2.3.c
14
6.2.3 Interoperability item d)
✓
-
-
-
C
Where web pages with RTT
functionality interoperate with other
ICT with RTT functionality (as
required by clause 6.2.1.1)
C.6.2.3.d
15
6.2.4 RTT responsiveness
✓
-
-
-
C
Where web pages utilise RTT input
C.6.2.4
16
6.3 Caller ID
✓
✓
✓
✓
C
Where web pages provide provides
caller identification or similar
telecommunications functions
C.6.3
17
6.4 Alternatives to voice-based
services
✓
✓
✓
C
Where web pages provide real-time
voice-based communication and also
provide voice mail, auto-attendant, or
interactive voice response facilities
C.6.4
18
6.5.2 Resolution item a)
✓
-
✓
-
C
Where web pages that provide two-
way voice communication includes
real-time video functionality
C.6.5.2
19
6.5.3 Frame rate item a)
✓
-
✓
-
C
Where web pages that provide two-
way voice communication includes
real-time video functionality
C.6.5.3
20
6.5.4 Synchronization between
audio and video
✓
-
✓
-
C
Where web pages provide two-way
voice communication include real-
time video functionality
C.6.5.4
21
6.5.5 Visual indicator of audio
with video
✓
✓
C
Where web pages provide two-way
voice communication, and include
real-time video functionality
C.6.5.5
22
6.5.6 Speaker identification with
video (sign language)
communication
✓
✓
C
Where web pages provide speaker
identification for voice users
C.6.5.6
23
7.1.1 Captioning playback
✓
-
-✓
-
C
Where web content displays video
with synchronized audio
C.7.1.1
24
7.1.2 Captioning
synchronization
✓
-
-
-
C
Where web content displays captions
C.7.1.2
ETSI CEN CENELEC
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EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of
the present
document
Perceivable
Operable
Understandable
Robust
25
7.1.3 Preservation of captioning
✓
-
✓-
-
C
Where web pages transmit, convert
or record video with synchronized
audio
C.7.1.3
26
7.1.4 Captions characteristics
✓
C
Where web content displays captions
C.7.1.4
27
7.1.5 Spoken subtitles
✓
✓
C
Where web content displays video
with synchronized audio
C.7.1.5
28
7.2.1 Audio description
playback
✓
-
-✓
-
C
Where web content displays video
with synchronized audio
C.7.2.1
29
7.2.2 Audio description
synchronization
✓
-
-
-
C
Where web content has a mechanism
to play audio description
C.7.2.2
30
7.2.3 Preservation of audio
description
✓
-
-✓
-
C
Where web pages transmit, convert,
or record video with synchronized
audio
C.7.2.3
31
7.3 User controls for captions
and audio description
✓
✓
-
-
C
Where web pages primarily display
materials containing video with
associated audio content
C.7.3
32
9.1.1.1 Non-text content
✓
-
-
-
C
Where ICT is a web page
C.9.1.1.1
33
9.1.2.1 Audio-only and video-
only (pre-recorded)
✓
-
-
-
C
Where ICT is a web page
C.9.1.2.1
34
9.1.2.2 Captions (pre-recorded)
✓
-
-
-
C
Where ICT is a web page
C.9.1.2.2
35
9.1.2.3 Audio description or
media alternative
(pre-recorded)
✓
-
-
-
C
Where ICT is a web page
C.9.1.2.3
36
9.1.2.5 Audio description
(pre-recorded)
✓
-
-
-
C
Where ICT is a web page
C.9.1.2.5
37
9.1.3.1 Info and relationships
✓
-
-
-
C
Where ICT is a web page
C.9.1.3.1
38
9.1.3.2 Meaningful sequence
✓
-
-
-
C
Where ICT is a web page
C.9.1.3.2
39
9.1.3.3 Sensory characteristics
✓
-
-
-
C
Where ICT is a web page
C.9.1.3.3
40
9.1.3.4 Orientation
✓
✓
-
-
C
Where ICT is a web page
C.9.1.3.4
41
9.1.3.5 Identify input purpose
✓
✓
-
-
C
Where ICT is a web page
C.9.1.3.5
42
9.1.4.1 Use of colour
✓
-
-
-
C
Where ICT is a web page
C.9.1.4.1
43
9.1.4.2 Audio control
✓
-
-
-
C
Where ICT is a web page
C.9.1.4.2
44
9.1.4.3 Contrast (minimum)
✓
-
-
-
C
Where ICT is a web page
C.9.1.4.3
45
9.1.4.4 Resize text
✓
-
-
-
C
Where ICT is a web page
C.9.1.4.4
46
9.1.4.5 Images of text
✓
-
-
-
C
Where ICT is a web page
C.9.1.4.5
47
9.1.4.10 Reflow
✓
-
-
-
C
Where ICT is a web page
C.9.1.4.10
48
9.1.4.11 Non-text contrast
✓
-
-
-
C
Where ICT is a web page
C.9.1.4.11
49
9.1.4.12 Text spacing
✓
✓
-
-
C
Where ICT is a web page
C.9.1.4.12
50
9.1.4.13 Content on hover or
focus
✓
✓
-
-
C
Where ICT is a web page
C.9.1.4.13
51
9.2.1.1 Keyboard
-
✓
-
-
C
Where ICT is a web page
C.9.2.1.1
52
9.2.1.2 No keyboard trap
-
✓
-
-
C
Where ICT is a web page
C.9.2.1.2
53
9.2.1.4 Character key shortcuts
-
✓
-
-
C
Where ICT is a web page
C.9.2.1.4
54
9.2.2.1 Timing adjustable
-
✓
-
-
C
Where ICT is a web page
C.9.2.2.1
55
9.2.2.2 Pause, stop, hide
-
✓
-
-
C
Where ICT is a web page
C.9.2.2.2
56
9.2.3.1 Three flashes or below
threshold
-
✓
-
-
C
Where ICT is a web page
C.9.2.3.1
57
9.2.4.1 Bypass blocks
-
✓
-
-
C
Where ICT is a web page
C.9.2.4.1
58
9.2.4.2 Page titled
-
✓
-
-
C
Where ICT is a web page
C.9.2.4.2
59
9.2.4.3 Focus Order
-
✓
-
-
C
Where ICT is a web page
C.9.2.4.3
ETSI CEN CENELEC
93
EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of
the present
document
Perceivable
Operable
Understandable
Robust
60
9.2.4.4 Link purpose (in
context)
-
✓
-
-
C
Where ICT is a web page
C.9.2.4.4
61
9.2.4.5 Multiple ways
-
✓
-
-
C
Where ICT is a web page
C.9.2.4.5
62
9.2.4.6 Headings and labels
-
✓
-
-
C
Where ICT is a web page
C.9.2.4.6
63
9.2.4.7 Focus visible
-
✓
-
-
C
Where ICT is a web page
C.9.2.4.7
64
9.2.5.1 Pointer gestures
-
✓
-
-
C
Where ICT is a web page
C.9.2.5.1
65
9.2.5.2 Pointer cancellation
-
✓
-
-
C
Where ICT is a web page
C.9.2.5.2
66
9.2.5.3 Label in name
-
✓
-
-
C
Where ICT is a web page
C.9.2.5.3
67
9.2.5.4 Motion actuation
-
✓
-
-
C
Where ICT is a web page
C.9.2.5.4
68
9.3.1.1 Language of page
-
-
✓
-
C
Where ICT is a web page
C.9.3.1.1
69
9.3.1.2 Language of parts
-
-
✓
-
C
Where ICT is a web page
C.9.3.1.2
70
9.3.2.1 On focus
-
-
✓
-
C
Where ICT is a web page
C.9.3.2.1
71
9.3.2.2 On input
-
-
✓
-
C
Where ICT is a web page
C.9.3.2.2
72
9.3.2.3 Consistent navigation
-
-
✓
-
C
Where ICT is a web page
C.9.3.2.3
73
9.3.2.4 Consistent identification
-
-
✓
-
C
Where ICT is a web page
C.9.3.2.4
74
9.3.3.1 Error identification
-
-
✓
-
C
Where ICT is a web page
C.9.3.3.1
75
9.3.3.2 Labels or instructions
-
-
✓
-
C
Where ICT is a web page
C.9.3.3.2
76
9.3.3.3 Error suggestion
-
-
✓
-
C
Where ICT is a web page
C.9.3.3.3
77
9.3.3.4 Error prevention (legal,
financial, data)
-
-
✓
-
C
Where ICT is a web page
C.9.3.3.4
78
9.4.1.1 Parsing
-
-
-
✓
C
Where ICT is a web page
C.9.4.1.1
79
9.4.1.2 Name, role, value
-
-
-
✓
C
Where ICT is a web page
C.9.4.1.2
80
9.4.1.3 Status messages
✓
✓
✓
✓
C
Where ICT is a web page
C.9.4.1.3
81
9.6 WCAG conformance
requirements
✓
✓
✓
✓
C
Where ICT is a web page
C.9.6
82
10.1.1.1 Non-text content
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.1.1
83
10.1.2.1 Audio-only and video-
only (pre-recorded)
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.2.1
84
10.1.2.2 Captions (pre-
recorded)
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.2.2
85
10.1.2.3 Audio description or
media alternative (pre-
recorded)
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.2.3
86
10.1.2.5 Audio description (pre-
recorded)
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.2.5
87
10.1.3.1 Info and relationships
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.3.1
88
10.1.3.2 Meaningful sequence
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.3.2
89
10.1.3.3 Sensory
characteristics
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.3.3
90
10.1.3.4 Orientation
✓
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.3.4
91
10.1.3.5 Identify input purpose
✓
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.3.5
92
10.1.4.1 Use of colour
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.4.1
93
10.1.4.2 Audio control
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.4.2
94
10.1.4.3 Contrast (minimum)
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.4.3
ETSI CEN CENELEC
94
EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of
the present
document
Perceivable
Operable
Understandable
Robust
95
10.1.4.4 Resize text
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.4.4
96
10.1.4.5 Images of text
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.4.5
97
10.1.4.10 Reflow
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.4.10
98
10.1.4.11 Non-text contrast
✓
-
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.4.11
99
10.1.4.12 Text spacing
✓
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.4.12
100
10.1.4.13 Content on hover or
focus
✓
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.1.4.13
101
10.2.1.1 Keyboard
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.1.1
102
10.2.1.2 No keyboard trap
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.1.2
103
10.2.1.4 Character key
shortcuts
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.1.4
104
10.2.2.1 Timing adjustable
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.2.1
105
10.2.2.2 Pause, stop, hide
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.2.2
106
10.2.3.1 Three flashes or below
threshold
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.3.1
107
10.2.4.2 Document titled
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.4.2
108
10.2.4.3 Focus Order
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.4.3
109
10.2.4.4 Link purpose (in
context)
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.4.4
110
10.2.4.6 Headings and labels
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.4.6
111
10.2.4.7 Focus visible
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.4.7
112
10.2.5.1 Pointer gestures
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.5.1
113
10.2.5.2 Pointer cancellation
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.5.2
114
10.2.5.3 Label in name
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.5.3
115
10.2.5.4 Motion actuation
-
✓
-
-
C
Where the documents and forms are
downloadable from a web page
C.10.2.5.4
116
10.3.1.1 Language of document
-
-
✓
-
C
Where the documents and forms are
downloadable from a web page
C.10.3.1.1
117
10.3.1.2 Language of parts
-
-
✓
-
C
Where the documents and forms are
downloadable from a web page
C.10.3.1.2
118
10.3.2.1 On focus
-
-
✓
-
C
Where the documents and forms are
downloadable from a web page
C.10.3.2.1
119
10.3.2.2 On input
-
-
✓
-
C
Where the documents and forms are
downloadable from a web page
C.10.3.2.2
120
10.3.3.1 Error identification
-
-
✓
-
C
Where the documents and forms are
downloadable from a web page
C.10.3.3.1
ETSI CEN CENELEC
95
EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of
the present
document
Perceivable
Operable
Understandable
Robust
121
10.3.3.2 Labels or instructions
-
-
✓
-
C
Where the documents and forms are
downloadable from a web page
C.10.3.3.2
122
10.3.3.3 Error suggestion
-
-
✓
-
C
Where the documents and forms are
downloadable from a web page
C.10.3.3.3
123
10.3.3.4 Error prevention (legal,
financial, data)
-
-
✓
-
C
Where the documents and forms are
downloadable from a web page
C.10.3.3.4
124
10.4.1.1 Parsing
-
-
-
✓
C
Where the documents and forms are
downloadable from a web page
C.10.4.1.1
125
10.4.1.2 Name, role, value
-
-
-
✓
C
Where the documents and forms are
downloadable from a web page
C.10.4.1.2
126
10.4.1.3 Status messages
✓
✓
✓
✓
C
Where the documents and forms are
downloadable from a web page
C.10.4.1.3
127
11.7 User preferences
✓
✓
✓
✓
U
C.11.7
128
11.8.1 Content technology
✓
✓
✓
✓
C
Where web content is an authoring
tool
C.11.8.1
129
11.8.2 Accessible content
creation
✓
✓
✓
✓
C
Where web content is an authoring
tool
C.11.8.2
130
11.8.3 Preservation of
accessibility information in
transformations
✓
✓
✓
✓
C
Where web content is an authoring
tool
C.11.8.3
131
11.8.4 Repair assistance
✓
✓
✓
✓
C
Where web content is an authoring
tool
C.11.8.4
132
11.8.5 Templates
✓
✓
✓
✓
C
Where web content is an authoring
tool
C.11.8.5
133
12.1.1 Accessibility and
compatibility features
✓
✓
✓
✓
U
-
C.12.1.1
134
12.1.2 Accessible
documentation
✓
✓
✓
✓
U
-
C.12.1.2
135
12.2.2 Information on
accessibility and compatibility
features
✓
✓
✓
✓
U
-
C.12.2.2
136
12.2.3 Effective communication
✓
✓
-
U
-
C.12.2.3
137
12.2.4 Accessible
documentation
✓
✓
✓
✓
U
-
C.12.2.4
ETSI CEN CENELEC
96
EN 301 549 V3.2.1 (2021-03)
Table A.2: Mobile Applications - relationship between the present document and
the essential requirements of Directive 2016/2102/EU
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of the
present
document
Perceivable
Operable
Understandable
Robust
1
5.2 Activation of accessibility
features
✓
✓
✓
✓
C
Where ICT has documented
accessibility features
C.5.2
2
5.3 Biometrics
-
✓
-
-
C
Where ICT uses biological
characteristics
C.5.3
3
5.4 Preservation of accessibility
information during conversion
✓
✓
✓
C
Where ICT converts information or
communication
C.5.4
4
5.5.1 Means of operation
-
✓
-
-
C
Where ICT has operable parts
C.5.5.1
5
5.5.2 Operable parts
discernibility
✓
✓
-
-
C
Where ICT has operable parts
C.5.5.2
6
5.6.1 Tactile or auditory status
✓
✓
-
-
C
Where ICT has a locking or toggle
control
C.5.6.1
7
5.6.2 Visual status
✓
✓
-
-
C
Where ICT has a locking or toggle
control
C.5.6.2
8
5.7 Key repeat
-
✓
-
-
C
Where ICT has a key repeat
function that cannot be turned off
C.5.7
9
5.8 Double-strike key
acceptance
-
✓
-
-
C
Where ICT has a keyboard or
keypad
C.5.8
10
5.9 Simultaneous user actions
✓
-
-
C
Where ICT uses simultaneous user
actions for its operation
C.5.9
11
6.1 Audio bandwidth for speech
✓
-
-
-
C
Where ICT provides two-way voice
communication
C.6.1
12
6.2.1.1 RTT communication
✓
-✓
-
-
C
Where ICT provides a means for
two-way voice communication
C.6.2.1.1
13
6.2.1.2 Concurrent voice and
text
✓
✓-
-
-
C
Where ICT provides a means for
two-way voice communication and
for users to communicate by RTT
C.6.2.1.2
14
6.2.2.1 Visually distinguishable
display
✓
-
-
-
C
Where ICT has RTT send and
receive capabilities
C.6.2.2.1
15
6.2.2.2 Programmatically
determinable send and receive
direction
✓
-
-
-
C
Where ICT has RTT send and
receive capabilities
C.6.2.2.2
16
6.2.2.3 Speaker identification
✓
C
Where ICT has RTT capabilities,
and provides speaker identification
for voice
C.6.2.2.3
17
6.2.2.4 Visual indicator of Audio
with RTT
✓
C
Where ICT provides two-way voice
communication, and has RTT
capabilities
C.6.2.2.4
18
6.2.3 Interoperability item a)
✓
-
-
-
C
Where ICT with RTT functionality
interoperates with other ICT with
RTT functionality (as required by
clause 6.2.1.1)
C.6.2.3.a
19
6.2.3 Interoperability item b)
✓
-
-
-
C
Where ICT with RTT functionality
interoperates with other ICT with
RTT functionality (as required by
clause 6.2.1.1)
C.6.2.3.b
20
6.2.3 Interoperability item c)
✓
-
-
-
C
Where ICT with RTT functionality
interoperates with other ICT with
RTT functionality (as required by
clause 6.2.1.1)
C.6.2.3.c
ETSI CEN CENELEC
97
EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of the
present
document
Perceivable
Operable
Understandable
Robust
21
6.2.3 Interoperability item d)
✓
-
-
-
C
Where ICT with RTT functionality
interoperates with other ICT with
RTT functionality (as required by
clause 6.2.1.1)
C.6.2.3.d
22
6.2.4 RTT responsiveness
✓
-
-
-
C
Where ICT utilises RTT input
C.6.2.4
23
6.3 Caller ID
✓
✓
✓
✓
C
Where ICT provides caller
identification, or similar
telecommunications functions are
provided
C.6.3
24
6.4 Alternatives to voice-based
services
✓
✓
✓
-
C
Where ICT provides real-time
voice-based communication and
also provides voice mail, auto-
attendant, or interactive voice
response facilities
C.6.4
25
6.5.2 Resolution item a)
✓
-
✓
-
C
Where ICT that provides two-way
voice communication includes real-
time video functionality
C.6.5.2
26
6.5.3 Frame rate item a)
✓
-
✓
-
C
Where ICT that provides two-way
voice communication includes real-
time video functionality
C.6.5.3
27
6.5.4 Synchronization between
audio and video
✓
-
✓
-
C
Where ICT that provides two-way
voice communication includes real-
time video functionality
C.6.5.4
28
6.5.5 Visual indicator of audio
with video
✓
✓
C
Where ICT provides two-way voice
communication, and includes real-
time video functionality
C.6.5.5
29
6.5.6 Speaker identification with
video (sign language)
communication
✓
✓
C
Where ICT provides speaker
identification for voice users
C.6.5.6
30
7.1.1 Captioning playback
✓
-
-
-
C
Where ICT displays video with
synchronized audio
C.7.1.1
31
7.1.2 Captioning
synchronization
✓
-
-
-
C
Where ICT displays captions
C.7.1.2
32
7.1.3 Preservation of captioning
✓
-
-
-
C
Where ICT transmits, converts or
records video with synchronized
audio
C.7.1.3
33
7.1.4 Captions characteristics
✓
C
Where ICT displays captions
C.7.1.4
34
7.1.5 Spoken subtitles
✓
C
Where ICT displays video with
synchronized audio
C.7.1.5
35
7.2.1 Audio description
playback
✓
-
-
-
C
Where ICT displays video with
synchronized audio
C.7.2.1
36
7.2.2 Audio description
synchronization
✓
-
-
-
C
Where ICT has a mechanism to
play audio description
C.7.2.2
37
7.2.3 Preservation of audio
description
✓
-
-
-
C
Where ICT transmits, converts, or
records video with synchronized
audio
C.7.2.3
38
7.3 User controls for captions
and audio description
✓
✓
-
-
C
Where ICT primarily displays
materials containing video with
associated audio content
C.7.3
39
10.1.1.1 Non-text content
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.1.1
ETSI CEN CENELEC
98
EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of the
present
document
Perceivable
Operable
Understandable
Robust
40
10.1.2.1 Audio-only and video-
only (pre-recorded)
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.2.1
41
10.1.2.2 Captions (pre-
recorded)
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.2.2
42
10.1.2.3 Audio description or
media alternative (pre-
recorded)
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.2.3
43
10.1.2.5 Audio description (pre-
recorded)
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.2.5
44
10.1.3.1 Info and relationships
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.3.1
45
10.1.3.2 Meaningful sequence
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.3.2
46
10.1.3.3 Sensory
characteristics
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.3.3
47
10.1.3.4 Orientation
✓
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.3.4
48
10.1.3.5 Identify input purpose
✓
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.3.5
49
10.1.4.1 Use of colour
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.4.1
50
10.1.4.2 Audio control
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.4.2
51
10.1.4.3 Contrast (minimum)
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.4.3
52
10.1.4.4 Resize text
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.4.4
53
10.1.4.5 Images of text
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.4.5
54
10.1.4.10 Reflow
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.4.10
55
10.1.4.11 Non-text contrast
✓
-
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.4.11
56
10.1.4.12 Text spacing
✓
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.4.12
57
10.1.4.13 Content on hover or
focus
✓
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.1.4.13
ETSI CEN CENELEC
99
EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of the
present
document
Perceivable
Operable
Understandable
Robust
58
10.2.1.1 Keyboard
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.1.1
59
10.2.1.2 No keyboard trap
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.1.2
60
10.2.1.4 Character key
shortcuts
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.1.4
61
10.2.2.1 Timing adjustable
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.2.1
62
10.2.2.2 Pause, stop, hide
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.2.2
63
10.2.3.1 Three flashes or below
threshold
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.3.1
64
10.2.4.2 Document titled
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.4.2
65
10.2.4.3 Focus Order
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.4.3
66
10.2.4.4 Link purpose (in
context)
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.4.4
67
10.2.4.6 Headings and labels
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.4.6
68
10.2.4.7 Focus visible
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.4.7
69
10.2.5.1 Pointer gestures
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.5.1
70
10.2.5.2 Pointer cancellation
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.5.2
71
10.2.5.3 Label in name
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.5.3
72
10.2.5.4 Motion actuation
-
✓
-
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.2.5.4
73
10.3.1.1 Language of document
-
-
✓
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.3.1.1
74
10.3.1.2 Language of parts
-
-
✓
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.3.1.2
75
10.3.2.1 On focus
-
-
✓
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.3.2.1
ETSI CEN CENELEC
100
EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of the
present
document
Perceivable
Operable
Understandable
Robust
76
10.3.2.2 On input
-
-
✓
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.3.2.2
77
10.3.3.1 Error identification
-
-
✓
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.3.3.1
78
10.3.3.2 Labels or instructions
-
-
✓
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.3.3.2
79
10.3.3.3 Error suggestion
-
-
✓
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.3.3.3
80
10.3.3.4 Error prevention (legal,
financial, data)
-
-
✓
-
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.3.3.4
81
10.4.1.1 Parsing
-
-
-
✓
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.4.1.1
82
10.4.1.2 Name, role, value
-
-
-
✓
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.4.1.2
83
10.4.1.3 Status messages
✓
✓
✓
✓
C
Where the documents and forms
are contained in or provided by the
mobile applications
C.10.4.1.3
84
11.1.1.1.1 Non-text content
(open functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.1.1.1.1
85
11.1.1.1.2 Non-text content
(closed functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface which
is closed to assistive technologies
for screen reading
C.11.1.1.1.2
86
11.1.2.1.1 Audio-only and
video-only (pre-recorded - open
functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.1.2.1.1
87
11.1.2.1.2 Audio-only and
video-only (pre-recorded -
closed functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface which
is closed to assistive technologies
for screen reading
C.11.1.2.1.2
88
11.1.2.2 Captions (pre-
recorded)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.1.2.2
89
11.1.2.3.1 Audio description or
media alternative (pre-recorded
- open functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.1.2.3.1
90
11.1.2.3.2 Audio description or
media alternative (pre-recorded
- closed functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface which
is closed to assistive technologies
for screen reading
C.11.1.2.3.2
91
11.1.2.5 Audio description (pre-
recorded)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.1.2.5
ETSI CEN CENELEC
101
EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of the
present
document
Perceivable
Operable
Understandable
Robust
92
11.1.3.1.1 Info and
relationships (open
functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.1.3.1.1
93
11.1.3.2.1 Meaningful
sequence (open functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.1.3.2.1
94
11.1.3.3 Sensory
characteristics
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.1.3.3
95
11.1.3.4 Orientation
✓
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.1.3.4
96
11.1.3.5.1 Identify input
purpose (open functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.1.3.5.1
97
11.1.3.5.2 Identify input
purpose (closed functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface which
is closed to assistive technologies
for screen reading
C.11.1.3.5.2
98
11.1.4.1 Use of colour
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.1.4.1
99
11.1.4.2 Audio control
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.1.4.2
100
11.1.4.3 Contrast (minimum)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.1.4.3
101
11.1.4.4.1 Resize text (open
functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.1.4.4.1
102
11.1.4.4.2 Resize text (closed
functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface which
is closed to assistive technologies
for screen reading
C.11.1.4.4.2
103
11.1.4.5.1 Images of text (open
functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.1.4.5.1
104
11.1.4.5.2 Images of text
(closed functionality)
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface which
is closed to assistive technologies
for screen reading
C.11.1.4.5.2
105
11.1.4.10 Reflow
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.1.4.10
106
11.1.4.11 Non-text contrast
✓
-
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.1.4.11
107
11.1.4.12 Text spacing
✓
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.1.4.12
108
11.1.4.13 Content on hover or
focus
✓
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.1.4.13
109
11.2.1.1.1 Keyboard (open
functionality)
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.2.1.1.1
ETSI CEN CENELEC
102
EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of the
present
document
Perceivable
Operable
Understandable
Robust
110
11.2.1.1.2 Keyboard (closed
functionality)
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface which
is closed to assistive technologies
for screen reading
C.11.2.1.1.2
111
11.2.1.2 No keyboard trap
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.2.1.2
112
11.2.1.4.1 Character key
shortcuts (open functionality)
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.2.1.4.1
113
11.2.1.4.2 Character key
shortcuts (closed functionality)
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface which
is closed to assistive technologies
for screen reading
C.11.2.1.4.2
114
11.2.2.1 Timing adjustable
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.2.2.1
115
11.2.2.2 Pause, stop, hide
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.2.2.2
116
11.2.3.1 Three flashes or below
threshold
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.2.3.1
117
11.2.4.3 Focus order
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.2.4.3
118
11.2.4.4 Link purpose (in
context)
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.2.4.4
119
11.2.4.6 Headings and labels
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.2.4.6
120
11.2.4.7 Focus visible
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.2.4.7
121
11.2.5.1 Pointer gestures
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.2.5.1
122
11.2.5.2 Pointer cancellation
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.2.5.2
123
11.2.5.3.1 Label in name (open
functionality)
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.2.5.3.1
124
11.2.5.4 Motion actuation
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.2.5.4
125
11.3.1.1.1 Language of
software (open functionality)
-
-
✓
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.3.1.1.1
126
11.3.1.1.2 Language of
software (closed functionality)
-
-
✓
-
C
Where ICT is non-web software
that provides a user interface which
is closed to assistive technologies
for screen reading
C.11.3.1.1.2
127
11.3.2.1 On focus
-
-
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.3.2.1
128
11.3.2.2 On input
-
-
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.3.2.2
129
11.3.3.1.1 Error identification
(open functionality)
-
-
✓
-
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.3.3.1.1
ETSI CEN CENELEC
103
EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of the
present
document
Perceivable
Operable
Understandable
Robust
130
11.3.3.1.2 Error Identification
(closed functionality)
-
-
✓
-
C
Where ICT is non-web software
that provides a user interface which
is closed to assistive technologies
for screen reading
C.11.3.3.1.2
131
11.3.3.2 Labels or instructions
-
-
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.3.3.2
132
11.3.3.3 Error suggestion
-
-
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.3.3.3
133
11.3.3.4 Error prevention (legal,
financial, data)
-
-
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.3.3.4
134
11.4.1.1.1 Parsing (open
functionality)
-
-
-
✓
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.4.1.1.1
135
11.4.1.2.1 Name, role, value
(open functionality)
-
-
-
✓
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.4.1.2.1
136
11.4.1.3.1 Status messages
(open functionality)
-
-
-
✓
C
Where ICT is non-web software
that provides a user interface and
that supports access to assistive
technologies for screen reading
C.11.4.1.3.1
137
11.5.2.3 Use of accessibility
services
✓
✓
✓
✓
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.3
138
11.5.2.5 Object information
✓
-
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.5
139
11.5.2.6 Row, column, and
headers
✓
-
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.6
140
11.5.2.7 Values
✓
-
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.7
141
11.5.2.8 Label relationships
✓
-
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.8
142
11.5.2.9 Parent-child
relationships
✓
-
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.9
143
11.5.2.10 Text
✓
-
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.10
144
11.5.2.11 List of available
actions
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.11
145
11.5.2.12 Execution of available
actions
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.12
146
11.5.2.13 Tracking of focus and
selection attributes
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.13
147
11.5.2.14 Modification of focus
and selection attributes
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.14
148
11.5.2.15 Change notification
-
✓
✓
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.15
149
11.5.2.16 Modifications of
states and properties
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.16
150
11.5.2.17 Modifications of
values and text
-
✓
-
-
C
Where ICT is non-web software
that provides a user interface
C.11.5.2.17
151
11.6.2 No disruption of
accessibility features
✓
✓
✓
✓
C
Where ICT is non-web software
that provides a user interface
C.11.6.2
ETSI CEN CENELEC
104
EN 301 549 V3.2.1 (2021-03)
Requirement
Requirement conditionality
Assessment
No.
Clause of the present
document
Essential
requirements of
Directive 2016/2102
Conditional or
Unconditional
Condition
Clause of the
present
document
Perceivable
Operable
Understandable
Robust
152
11.7 User preferences
✓
✓
✓
✓
C
Where ICT is non-web software
that is not designed to be isolated
from its platform, and that provides
a user interface
C.11.7
153
11.8.1 Content technology
✓
✓
✓
✓
C
Where ICT is an authoring tool
C.11.8.1
154
11.8.2 Accessible content
creation
✓
✓
✓
✓
C
Where ICT is an authoring tool
C.11.8.2
155
11.8.3 Preservation of
accessibility information in
transformations
✓
✓
✓
✓
C
Where ICT is an authoring tool that
provides restructuring
transformations or re-coding
transformations
C.11.8.3
156
11.8.4 Repair assistance
✓
✓
✓
✓
C
Where ICT is an authoring tool
C.11.8.4
157
11.8.5 Templates
✓
✓
✓
✓
C
Where ICT is an authoring tool that
provides templates
C.11.8.5
158
12.1.1 Accessibility and
compatibility features
✓
✓
✓
✓
U
-
C.12.1.1
159
12.1.2 Accessible
documentation
✓
✓
✓
✓
U
-
C.12.1.2
160
12.2.2 Information on
accessibility and compatibility
features
✓
✓
✓
✓
U
-
C.12.2.2
161
12.2.3 Effective communication
✓
-
✓
-
U
-
C.12.2.3
162
12.2.4 Accessible
documentation
✓
✓
✓
✓
U
-
C.12.2.4
ETSI CEN CENELEC
105
EN 301 549 V3.2.1 (2021-03)
Annex B (informative):
Relationship between requirements and functional
performance statements
B.1 Relationships between clauses 5 to 13 and the functional
performance statements
Table B.2 shows which of the requirements set out in clauses 5 to 13 support each of the functional performance
statements set out in clause 4.2.
To allow Table B.2 to fit the page, the abbreviations shown in Table B.1 have been used in the column headers of
Table B.2.
Table B.1: Key to the column header designations used in Table B.2
Clause
number
Column header
abbreviation
Functional performance statement
4.2.1
WV
Usage without vision
4.2.2
LV
Usage with limited vision
4.2.3
WPC
Usage without perception of colour
4.2.4
WH
Usage without hearing
4.2.5
LH
Usage with limited hearing
4.2.6
WVC
Usage without vocal capability
4.2.7
LMS
Usage with limited manipulation or strength
4.2.8
LR
Usage with limited reach
4.2.9
PST
Minimize photosensitive seizure triggers
4.2.10
LC
Usage with limited cognition
4.2.11
P
Privacy
The following abbreviations have been used to represent the relationship between the requirements in clauses 5 to 13
and the functional performance statements:
• P = Primary relationship. The requirement supports the functional performance statement.
• S = Secondary relationship. The requirement provides partial support for the functional performance statement
because some users may use the feature in specific situations.
Table B.2: Requirements in clauses 5 to 13 supporting the accessibility needs
expressed in the functional performance statements
Requirements
4.2.1
WV
4.2.2
LV
4.2.3
WPC
4.2.4
WH
4.2.5
LH
4.2.6
WVC
4.2.7
LMS
4.2.8
LR
4.2.9
PST
4.2.10
LC
4.2.11
P
5.1.2.1 Closed functionality
P
P
P
P
P
P
P
P
P
P
P
5.1.2.2 Assistive technology
-
-
-
-
-
-
-
-
-
-
S
5.1.3.1 General (belongs to
5.1.3 Non-visual access)
P
S
-
-
-
-
-
-
-
S
-
5.1.3.2 Auditory output
delivery including speech
P
S
-
-
-
-
-
-
-
S
-
5.1.3.3 Auditory output
correlation
-
P
-
-
-
-
-
-
-
S
-
5.1.3.4 Speech output user
control
P
S
-
-
-
-
-
-
-
S
-
5.1.3.5 Speech output
automatic interruption
P
S
-
-
-
-
-
-
-
S
-
5.1.3.6 Speech output for
non-text content
P
S
-
-
-
-
-
-
-
S
-
5.1.3.7 Speech output for
video information
P
S
-
-
-
-
-
-
-
S
-
5.1.3.8 Masked entry
P
S
-
-
-
-
-
-
-
S
P
ETSI CEN CENELEC
106
EN 301 549 V3.2.1 (2021-03)
Requirements
4.2.1
WV
4.2.2
LV
4.2.3
WPC
4.2.4
WH
4.2.5
LH
4.2.6
WVC
4.2.7
LMS
4.2.8
LR
4.2.9
PST
4.2.10
LC
4.2.11
P
5.1.3.9 Private access to
personal data
P
S
-
-
-
-
-
-
-
S
P
5.1.3.10 Non-interfering audio
output
P
S
-
-
-
-
-
-
-
S
-
5.1.3.11 Private listening
volume
P
S
-
-
S
-
-
-
-
S
S
5.1.3.12 Speaker volume
P
S
-
-
S
-
-
-
-
S
-
5.1.3.13 Volume reset
P
S
-
-
S
-
-
-
-
S
-
5.1.3.14 Spoken languages
P
S
-
-
-
-
-
-
-
S
-
5.1.3.15 Non-visual error
identification
P
S
-
-
-
-
-
-
-
S
-
5.1.3.16 Receipts, tickets,
and transactional outputs
P
S
-
-
-
-
-
-
-
-
-
5.1.4 Functionality closed to
text enlargement
-
P
-
-
-
-
-
-
-
-
-
5.1.5 Visual output for
auditory information
-
-
-
P
P
-
-
-
-
S
-
5.1.6.1 Operation without
keyboard interface (closed
functionality)
P
P
-
-
-
S
P
-
-
-
-
5.1.6.2 Operation without
keyboard interface (Input
focus)
P
P
-
-
-
S
P
-
-
-
-
5.1.7 Access without speech
-
-
-
-
-
P
-
-
-
-
-
5.2 Activation of accessibility
features
P
P
P
P
P
-
P
-
-
-
-
5.3 Biometrics
P
P
-
P
-
P
P
P
-
-
P
5.4 Preservation of
accessibility information
during conversion
P
P
-
P
P
-
-
-
-
S
-
5.5.1 Means of operation
-
-
-
-
-
-
P
-
-
-
-
5.5.2 Operable part
discernibility
P
S
-
-
-
-
-
-
-
-
-
5.6.1 Tactile or auditory
status
P
P
-
P
-
-
-
-
-
S
-
5.6.2 Visual status
-
-
-
P
P
-
P
P
-
S
-
5.7 Key repeat
-
-
-
-
-
-
P
-
-
S
-
5.8 Double-strike key
acceptance
-
-
-
-
-
-
P
P
-
S
-
5.9 Simultaneous user
actions
-
-
-
-
-
-
P
P
-
S
-
6.1 Audio bandwidth for
speech (informative
recommendation)
-
-
-
-
P
-
-
-
-
-
-
6.2.1.1 RTT communication
-
-
-
P
S
S
-
-
-
-
-
6.2.1.2 Concurrent voice and
text
-
-
-
P
P
S
-
-
-
-
-
6.2.2.1 Visually
distinguishable display
-
-
-
P
S
S
-
-
-
-
-
6.2.2.2 Programmatically
determinable send and
receive direction
-
-
-
P
S
S
-
-
-
-
-
6.2.2.3 Speaker identification
-
-
-
P
P
S
-
-
-
-
-
6.2.2.4 Visual indicator of
Audio with RTT
-
-
-
P
P
S
-
-
-
-
-
6.2.3 Interoperability
-
-
-
P
S
S
-
-
-
-
-
6.2.4 RTT responsiveness
-
-
-
P
S
S
-
-
-
-
-
6.3 Caller ID
P
P
-
-
-
-
-
-
-
S
-
6.4 Alternatives to voice-
based services
-
-
-
P
P
P
-
-
-
-
-
6.5.2 Resolution
-
-
-
P
P
S
-
-
-
-
-
6.5.3 Frame rate
-
-
-
P
P
S
-
-
-
-
-
ETSI CEN CENELEC
107
EN 301 549 V3.2.1 (2021-03)
Requirements
4.2.1
WV
4.2.2
LV
4.2.3
WPC
4.2.4
WH
4.2.5
LH
4.2.6
WVC
4.2.7
LMS
4.2.8
LR
4.2.9
PST
4.2.10
LC
4.2.11
P
6.5.4 Synchronization
between audio and video
-
-
-
P
P
S
-
-
-
-
-
6.5.5 Visual indicator of audio
with video
-
-
-
P
P
S
-
-
-
-
-
6.5.6 Speaker identification
with video (sign language)
communication
-
-
-
P
P
S
-
-
-
-
-
6.6 Alternatives to video-
based services
P
S
-
P
P
P
-
-
-
-
-
7.1.1 Captioning playback
-
-
-
P
P
-
-
-
-
S
-
7.1.2 Captioning
synchronization
-
-
-
P
P
-
-
-
-
S
-
7.1.3 Preservation of
captioning
-
-
-
P
P
-
-
-
-
S
-
7.1.4 Captions characteristics
-
S
S
P
P
-
-
-
-
S
-
7.1.5 Spoken subtitles
P
P
S
-
-
-
-
-
-
S
-
7.2.1 Audio description
playback
P
P
-
-
-
-
-
-
-
S
-
7.2.2 Audio description
synchronization
P
P
-
-
-
-
-
-
-
S
-
7.2.3 Preservation of audio
description
P
P
-
-
-
-
-
-
-
S
-
7.3 User controls for captions
and audio description
P
P
-
P
P
-
-
-
-
S
-
8.1.2 Standard connections
P
P
-
-
P
-
P
P
-
P
-
8.1.3 Colour
-
S
P
-
-
-
-
-
-
S
-
8.2.1.1 Speech volume range
-
-
-
-
P
-
-
-
-
-
-
8.2.1.2 Incremental volume
control
-
-
-
-
P
-
-
-
-
-
-
8.2.2.1 Fixed-line devices
-
-
-
-
P
-
-
-
-
-
-
8.2.2.2 Wireless
communication devices
-
-
-
-
P
-
-
-
-
-
-
8.3.0 Stationary ICT, General
(informative recommendation)
-
-
-
-
-
-
-
P
-
-
-
8.3.1 Forward or side reach
-
-
-
-
-
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-
P
-
-
-
8.3.2.1 Unobstructed high
forward reach
-
-
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P
-
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-
8.3.2.2 Unobstructed low
forward reach
-
-
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-
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P
-
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-
8.3.2.3.1 Obstructed forward
reach - Clear space
-
-
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P
-
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-
8.3.2.3.2 Obstructed
(< 510 mm) forward reach
-
-
-
-
-
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-
P
-
-
-
8.3.2.3.3 Obstructed
(< 635 mm) forward reach
-
-
-
-
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-
-
P
-
-
-
8.3.2.4 Knee and toe
clearance width
-
-
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P
-
-
-
8.3.2.5 Toe clearance
-
-
-
-
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-
-
P
-
-
-
8.3.2.6 Knee clearance
-
-
-
-
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P
-
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-
8.3.3.1 Unobstructed high
side reach
-
-
-
-
-
-
-
P
-
-
-
8.3.3.2 Unobstructed low side
reach
-
-
-
-
-
-
-
P
-
-
-
8.3.3.3.1 Obstructed
(≤ 255 mm) side reach
-
-
-
-
-
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-
P
-
-
-
8.3.3.3.2 Obstructed
(≤ 610 mm) side reach
-
-
-
-
-
-
-
P
-
-
-
8.3.4.1 Change in level
-
-
-
-
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P
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-
-
8.3.4.2 Clear floor or ground
space
-
-
-
-
-
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-
P
-
-
-
8.3.4.3.1 Approach - General
-
-
-
-
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P
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8.3.4.3.2 Forward approach
-
-
-
-
-
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P
-
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8.3.4.3.3 Parallel approach
-
-
-
-
-
-
-
P
-
-
-
ETSI CEN CENELEC
108
EN 301 549 V3.2.1 (2021-03)
Requirements
4.2.1
WV
4.2.2
LV
4.2.3
WPC
4.2.4
WH
4.2.5
LH
4.2.6
WVC
4.2.7
LMS
4.2.8
LR
4.2.9
PST
4.2.10
LC
4.2.11
P
8.3.5 Visibility
-
-
-
-
-
-
-
P
-
-
-
8.3.6 Installation instructions
-
-
-
-
-
-
-
P
-
-
-
8.4.1 Numeric keys
P
S
-
-
-
-
-
-
-
-
-
8.4.2.1 Means of operation of
mechanical parts
-
-
-
-
-
-
P
-
-
-
-
8.4.2.2 Force of operation of
mechanical parts
-
-
-
-
-
-
P
-
-
-
-
8.4.3 Keys, tickets and fare
cards
P
S
-
-
-
-
-
-
-
-
-
8.5 Tactile indication of
speech mode
P
-
-
-
-
-
-
-
-
-
-
9.1.1.1 Non-text content
P
P
-
P
S
-
-
-
-
S
S
9.1.2.1 Audio-only and video-
only (pre-recorded)
P
P
-
P
P
-
-
-
-
S
-
9.1.2.2 Captions
(pre-recorded)
-
-
-
P
P
-
-
-
-
S
-
9.1.2.3 Audio description or
media alternative
(pre-recorded)
P
S
-
-
-
-
-
-
-
S
-
9.1.2.4 Captions (live)
-
-
-
P
P
-
-
-
-
S
-
9.1.2.5 Audio description
(pre-recorded)
P
S
-
-
-
-
-
-
-
S
-
9.1.3.1 Info and relationships
P
S
-
-
-
-
-
-
-
S
-
9.1.3.2 Meaningful sequence
P
S
-
-
-
-
-
-
-
S
-
9.1.3.3 Sensory
characteristics
P
P
P
P
P
-
-
-
-
S
-
9.1.3.4 Orientation
-
-
-
-
-
-
P
P
-
S
-
9.1.3.5 Identify input purpose
-
P
-
-
-
-
-
-
-
-
-
9.1.4.1 Use of colour
P
P
P
-
-
-
-
-
-
S
-
9.1.4.2 Audio control
P
-
-
-
P
-
-
-
-
S
-
9.1.4.3 Contrast (minimum)
-
P
P
-
-
-
-
-
-
S
-
9.1.4.4 Resize text
-
P
-
-
-
-
-
-
-
-
-
9.1.4.5 Images of text
-
P
P
-
-
-
-
-
-
S
-
9.1.4.10 Reflow
-
P
-
-
-
-
-
-
-
-
-
9.1.4.11 Non-text contrast
-
P
P
-
-
-
-
-
S
-
9.1.4.12 Text spacing
-
P
-
-
-
-
-
-
-
P
-
9.1.4.13 Content on hover or
focus
-
P
-
-
-
-
-
-
-
P
-
9.2.1.1 Keyboard
P
P
-
-
-
S
P
-
-
-
-
9.2.1.2 No keyboard trap
P
P
-
-
-
S
P
-
-
-
-
9.2.1.4 Character key
shortcuts
-
-
-
-
-
-
P
P
-
S
-
9.2.2.1 Timing adjustable
P
P
-
P
P
-
P
-
-
P
-
9.2.2.2 Pause, stop, hide
P
P
-
P
P
-
P
-
-
P
-
9.2.3.1 Three flashes or
below threshold
-
-
-
-
-
-
-
-
P
-
-
9.2.4.1 Bypass blocks
P
P
-
-
-
S
P
-
-
P
-
9.2.4.2 Page titled
P
P
-
-
-
-
P
-
-
P
-
9.2.4.3 Focus order
P
P
-
-
-
-
P
-
-
P
-
9.2.4.4 Link purpose
(in context)
P
P
-
-
-
S
P
-
-
P
-
9.2.4.5 Multiple ways
P
P
-
-
-
S
P
-
-
P
-
9.2.4.6 Headings and labels
P
P
-
S
-
S
P
-
-
P
-
9.2.4.7 Focus visible
P
P
-
-
-
S
P
-
-
P
-
9.2.5.1 Pointer gestures
-
-
-
-
-
-
P
P
-
P
-
9.2.5.2 Pointer cancellation
-
P
-
-
-
-
P
P
-
P
-
9.2.5.3 Label in name
-
-
-
-
-
-
P
P
-
S
-
9.2.5.4 Motion actuation
S
S
-
-
-
-
P
P
-
S
-
9.3.1.1 Language of page
P
S
-
S
S
-
-
-
-
S
-
9.3.1.2 Language of parts
P
S
-
S
S
-
-
-
-
S
-
9.3.2.1 On focus
P
P
-
-
-
-
P
-
-
P
-
9.3.2.2 On Input
P
P
-
-
-
-
P
-
-
P
-
ETSI CEN CENELEC
109
EN 301 549 V3.2.1 (2021-03)
Requirements
4.2.1
WV
4.2.2
LV
4.2.3
WPC
4.2.4
WH
4.2.5
LH
4.2.6
WVC
4.2.7
LMS
4.2.8
LR
4.2.9
PST
4.2.10
LC
4.2.11
P
9.3.2.3 Consistent navigation
P
P
-
-
-
-
-
-
-
P
-
9.3.2.4 Consistent
identification
S
P
-
-
-
-
-
-
-
P
-
9.3.3.1 Error identification
P
P
P
-
-
-
-
-
-
P
-
9.3.3.2 Labels or instructions
P
P
-
-
-
S
S
-
-
P
-
9.3.3.3 Error suggestion
P
P
-
-
-
S
S
-
-
P
-
9.3.3.4 Error prevention
(legal, financial, data)
P
P
-
-
-
-
S
-
-
P
-
9.4.1.1 Parsing
P
S
-
-
-
-
-
-
-
-
-
9.4.1.2 Name, role, value
P
P
-
-
-
-
S
-
-
-
-
9.4.1.3 Status messages
P
P
P
P
P
S
P
P
P
P
-
9.6 WCAG Conformance
requirements
P
P
P
P
P
S
P
P
P
P
S
10.1.1.1 Non-text content
P
P
-
P
S
-
-
-
-
S
S
10.1.2.1 Audio-only and
video-only (pre-recorded)
P
P
-
P
P
-
-
-
-
S
-
10.1.2.2 Captions
(pre-recorded)
-
-
-
P
P
-
-
-
-
S
-
10.1.2.3 Audio description or
media alternative
(pre-recorded)
P
S
-
-
-
-
-
-
-
S
-
10.1.2.4 Captions (live)
-
-
-
P
P
-
-
-
-
S
-
10.1.2.5 Audio description
(pre-recorded)
P
S
-
-
-
-
-
-
-
S
-
10.1.3.1 Info and
relationships
P
S
-
-
-
-
-
-
-
S
-
10.1.3.2 Meaningful
sequence
P
S
-
-
-
-
-
-
-
S
-
10.1.3.3 Sensory
characteristics
P
P
P
P
P
-
-
-
-
S
-
10.1.3.4 Orientation
-
-
-
-
-
-
P
P
-
S
-
10.1.3.5 Identify input
purpose
-
P
-
-
-
-
-
-
-
-
-
10.1.4.1 Use of colour
P
P
P
-
-
-
-
-
-
S
-
10.1.4.2 Audio control
P
-
-
-
P
-
-
-
-
S
-
10.1.4.3 Contrast (minimum)
-
P
P
-
-
-
-
-
-
S
-
10.1.4.4 Resize text
-
P
-
-
-
-
-
-
-
-
-
10.1.4.5 Images of text
-
P
P
-
-
-
-
-
-
S
-
10.1.4.10 Reflow
-
P
-
-
-
-
-
-
-
-
-
10.1.4.11 Non-text contrast
-
P
P
-
-
-
-
-
S
-
10.1.4.12 Text spacing
-
P
-
-
-
-
-
-
-
P
-
10.1.4.13 Content on hover or
focus
-
P
-
-
-
-
-
-
-
P
-
10.2.1.1 Keyboard
P
P
-
-
-
S
P
-
-
-
-
10.2.1.2 No keyboard trap
P
P
-
-
-
S
P
-
-
-
-
10.2.1.4 Character key
shortcuts
-
-
-
-
-
-
P
P
-
S
-
10.2.2.1 Timing adjustable
P
P
-
P
P
-
P
-
-
P
-
10.2.2.2 Pause, stop, hide
P
P
-
P
P
-
P
-
-
P
-
10.2.3.1 Three flashes or
below threshold
-
-
-
-
-
-
-
-
P
-
-
10.2.4.2 Document titled
P
P
-
-
-
-
P
-
-
P
-
10.2.4.3 Focus order
P
P
-
-
-
-
P
-
-
P
-
10.2.4.4 Link purpose
(in context)
P
P
-
-
-
S
P
-
-
P
-
10.2.4.6 Headings and labels
P
P
-
S
-
S
P
-
-
P
-
10.2.4.7 Focus visible
P
P
-
-
-
S
P
-
-
P
-
10.2.5.1 Pointer gestures
-
-
-
-
-
-
P
P
-
P
-
10.2.5.2 Pointer cancellation
-
P
-
-
-
-
P
P
-
P
-
10.2.5.3 Label in name
-
-
-
-
-
-
P
P
-
S
-
10.2.5.4 Motion actuation
S
S
-
-
-
-
P
P
-
S
-
10.3.1.1 Language of page
P
S
-
S
S
-
-
-
-
S
-
ETSI CEN CENELEC
110
EN 301 549 V3.2.1 (2021-03)
Requirements
4.2.1
WV
4.2.2
LV
4.2.3
WPC
4.2.4
WH
4.2.5
LH
4.2.6
WVC
4.2.7
LMS
4.2.8
LR
4.2.9
PST
4.2.10
LC
4.2.11
P
10.3.1.2 Language of parts
P
S
-
S
S
-
-
-
-
S
-
10.3.2.1 On focus
P
P
-
-
-
-
P
-
-
P
-
10.3.2.2 On input
P
P
-
-
-
-
P
-
-
P
-
10.3.3.1 Error identification
P
P
P
-
-
-
-
-
-
P
-
10.3.3.2 Labels or instructions
P
P
-
-
-
S
S
-
-
P
-
10.3.3.3 Error suggestion
P
P
-
-
-
S
S
-
-
P
-
10.3.3.4 Error prevention
(legal, financial, data)
P
P
-
-
-
-
S
-
-
P
-
10.4.1.1 Parsing
P
S
-
-
-
-
-
-
-
-
-
10.4.1.2 Name, role, value
P
P
-
-
-
-
S
-
-
-
-
10.4.1.3 Status messages
P
P
P
P
P
P
P
P
P
P
-
10.5 Caption positioning
-
-
-
P
P
-
-
-
-
S
-
10.6 Audio description timing
P
S
-
-
-
-
-
-
-
S
-
11.1.1.1.1 Non-text content
(open functionality)
P
P
-
P
S
-
-
-
-
S
S
11.1.1.1.2 Non-text content
(closed functionality
P
P
-
P
S
-
-
-
-
S
S
11.1.2.1.1 Audio-only and
video-only (pre-recorded -
open functionality)
P
P
-
P
P
-
-
-
-
S
-
11.1.2.1.2.1 Pre-recorded
audio-only (closed
functionality)
-
-
-
P
P
-
-
-
-
S
-
11.1.2.1.2.2 Pre-recorded
video-only (closed
functionality)
P
S
-
-
-
-
-
-
-
S
-
11.1.2.2 Captions
(pre-recorded)
-
-
-
P
P
-
-
-
-
S
-
11.1.2.3.1 Audio description
or media alternative
(pre-recorded - open
functionality)
P
S
-
-
-
-
-
-
-
S
-
11.1.2.3.2 Audio description
or media alternative
(pre-recorded - closed
functionality)
P
S
-
-
-
-
-
-
-
S
-
11.1.2.4 Captions (live)
-
-
-
P
P
-
-
-
-
S
-
11.1.2.5 Audio description
(pre-recorded)
P
S
-
-
-
-
-
-
-
S
-
11.1.3.1.1 Info and
relationships (open
functionality)
P
S
-
-
-
-
-
-
-
S
-
11.1.3.1.2 Info and
relationships (closed
functionality)
P
S
-
-
-
-
-
-
-
S
-
11.1.3.2.1 Meaningful
sequence (open functionality)
P
S
-
-
-
-
-
-
-
S
-
11.1.3.2.2 Meaningful
sequence (closed
functionality)
P
S
-
-
-
-
-
-
-
S
-
11.1.3.3 Sensory
characteristics
P
P
P
P
P
-
-
-
-
S
-
11.1.3.4 Orientation
-
-
-
-
-
-
P
P
-
S
-
11.1.3.5.1 Identify input
purpose (open functionality)
-
P
-
-
-
-
-
-
-
-
-
11.1.3.5.2 Identify input
purpose (closed functionality)
-
P
-
-
-
-
-
-
-
-
-
11.1.4.1 Use of colour
P
P
P
-
-
-
-
-
-
S
-
11.1.4.2 Audio control
P
-
-
-
P
-
-
-
-
S
-
11.1.4.3 Contrast (minimum)
-
P
P
-
-
-
-
-
-
S
-
11.1.4.4.1 Resize text (open
functionality)
-
P
-
-
-
-
-
-
-
-
-
ETSI CEN CENELEC
111
EN 301 549 V3.2.1 (2021-03)
Requirements
4.2.1
WV
4.2.2
LV
4.2.3
WPC
4.2.4
WH
4.2.5
LH
4.2.6
WVC
4.2.7
LMS
4.2.8
LR
4.2.9
PST
4.2.10
LC
4.2.11
P
11.1.4.4.2 Resize text (closed
functionality)
-
P
-
-
-
-
-
-
-
-
-
11.1.4.5.1 Images of text
(open functionality)
-
P
P
-
-
-
-
-
-
S
-
11.1.4.5.2 Images of text
(closed functionality)
-
-
-
-
-
-
-
-
-
-
-
11.1.4.10 Reflow
-
P
-
-
-
-
-
-
-
-
-
11.1.4.11 Non-text contrast
-
P
P
-
-
-
-
-
S
-
11.1.4.12 Text spacing
-
P
-
-
-
-
-
-
-
P
-
11.1.4.13 Content on hover or
focus
-
P
-
-
-
-
-
-
-
P
-
11.2.1.1.1 Keyboard (open
functionality)
P
P
-
-
-
S
P
-
-
-
-
11.2.1.1.2 Keyboard (closed
functionality)
P
P
-
-
-
S
P
-
-
-
-
11.2.1.2 No keyboard trap
P
P
-
-
-
S
P
-
-
-
-
11.2.1.4.1 Character key
shortcuts (open functionality)
-
-
-
-
-
-
P
P
-
S
-
11.2.1.4.2 Character key
shortcuts (closed
functionality)
-
-
-
-
-
-
P
P
-
S
-
11.2.2.1 Timing adjustable
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11.2.2.2 Pause, stop, hide
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11.2.3.1 Three flashes or
below threshold
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11.2.4.3 Focus order
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11.2.4.4 Link purpose
(in context)
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11.2.4.6 Headings and labels
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11.2.4.7 Focus visible
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11.2.5.1 Pointer gestures
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11.2.5.2 Pointer cancellation
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11.2.5.3.1 Label in name
(open functionality)
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11.2.5.3.2 Label in name
(closed functionality)
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11.2.5.4 Motion actuation
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11.3.1.1.1 Language of
software (open functionality)
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11.3.1.1.2 Language of
software (closed functionality)
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11.3.2.1 On focus
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11.3.2.2 On input
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11.3.3.1.1 Error identification
(open functionality)
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11.3.3.1.2 Error Identification
(closed functionality)
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11.3.3.2 Labels or instructions
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11.3.3.3 Error suggestion
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11.3.3.4 Error prevention
(legal, financial, data)
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11.4.1.1.1 Parsing (open
functionality)
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11.4.1.1.2 Parsing (closed
functionality)
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11.4.1.2.1 Name, role, value
(open functionality)
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11.4.1.2.2 Name, role, value
(closed functionality)
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11.4.1.3.1 Status messages
(open functionality)
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11.5.1 Closed functionality
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ETSI CEN CENELEC
112
EN 301 549 V3.2.1 (2021-03)
Requirements
4.2.1
WV
4.2.2
LV
4.2.3
WPC
4.2.4
WH
4.2.5
LH
4.2.6
WVC
4.2.7
LMS
4.2.8
LR
4.2.9
PST
4.2.10
LC
4.2.11
P
11.5.2.1 Platform accessibility
service support for software
that provides a user interface
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11.5.2.2 Platform accessibility
service support for assistive
technologies
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11.5.2.3 Use of accessibility
services
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11.5.2.4 Assistive technology
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11.5.2.5 Object information
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11.5.2.6 Row, column, and
headers
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