prEN ISO 9241-171
(Main)Ergonomics of human-system interaction - Part 171: Guidance on software accessibility (ISO/DIS 9241-171:2025)
Ergonomics of human-system interaction - Part 171: Guidance on software accessibility (ISO/DIS 9241-171:2025)
ISO 9241-171:2008 provides ergonomics guidance and specifications for the design of accessible software for use at work, in the home, in education and in public places. It covers issues associated with designing accessible software for people with the widest range of physical, sensory and cognitive abilities, including those who are temporarily disabled, and the elderly. It addresses software considerations for accessibility that complement general design for usability as addressed by ISO 9241-110, ISO 9241-11 to ISO 9241-17, ISO 14915 and ISO 13407.
ISO 9241-171:2008 is applicable to the accessibility of interactive systems. It addresses a wide range of software (e.g. office, Web, learning support and library systems).
It promotes the increased usability of systems for a wider range of users. While it does not cover the behaviour of, or requirements for, assistive technologies (including assistive software), it does address the use of assistive technologies as an integrated component of interactive systems.
It is intended for use by those responsible for the specification, design, development, evaluation and procurement of software platforms and software applications.
Ergonomie der Mensch-System-Interaktion - Teil 171: Leitlinien für die Barrierefreiheit von Software (ISO/DIS 9241-171:2025)
Dieses Dokument stellt ergonomische Leitlinien und Anforderungen für die Gestaltung barrierefreier Software zum Einsatz bei der Arbeit, zu Hause, im Bildungswesen und an öffentlichen Plätzen zur Verfügung. Es behandelt Probleme im Zusammenhang mit der Gestaltung von Software, die für Menschen mit einem möglichst breiten Spektrum physischer, sensorischer und kognitiver Fähigkeiten barrierefrei ist, einschließlich vorübergehend oder situationsbedingt in ihren Fähigkeiten beeinträchtigter und älterer Menschen. Es enthält Überlegungen zur Softwarebarrierefreiheit, die die Festlegungen in ISO 9241 11, Teile der Normenreihe ISO 9241 1xx und ISO 9241 210 zur allgemeinen Gestaltung ergänzen.
Dieses Dokument gilt für die Barrierefreiheit von interaktiven Systemen. Es behandelt ein breites Softwarespektrum (z. B. für Heim-, Mobil- und Büroanwendungen, das Internet, Lernunterstützung und Bibliothekssysteme).
Es dient der Verbesserung der Gebrauchstauglichkeit von Systemen für eine möglichst große Anzahl von Benutzern in den unterschiedlichsten Nutzungskontexten. Obgleich es weder das Verhalten von unterstützender Technik (einschließlich unterstützender Software) noch Anforderungen an diese abdeckt, behandelt es den Einsatz von unterstützender Technik als integrierten Bestandteil von interaktiven Systemen.
Es ist dazu bestimmt, von Personen oder Organisationen angewendet zu werden, die Verantwortung für die Spezifikation, Gestaltung, Entwicklung, Bewertung und Beschaffung von Softwarebetriebssystemen und Softwareanwendungen tragen.
Ergonomie de l'interaction homme-système - Partie 171: Lignes directrices relatives à l'accessibilité aux logiciels (ISO/DIS 9241-171:2025)
L'ISO 9241-171:2008 fournit des lignes directrices relatives à l'ergonomie et des spécifications pour la conception de logiciels accessibles destinés à être utilisés au travail, à la maison, dans l'éducation et dans les lieux publics. Elle couvre les aspects liés à la conception de logiciels accessibles pour les personnes présentant le plus large éventail possible de capacités physiques, sensorielles et cognitives, y compris les personnes présentant des déficiences temporaires et les personnes âgées. Elle traite les aspects logiciels en matière d'accessibilité qui complètent la conception générale relative à l'utilisabilité couverte par l'ISO 9241-110, l'ISO 9241-11 à l'ISO 9241-17, l'ISO 14915 et l'ISO 13407.
L'ISO 9241-171:2008 est applicable à l'accessibilité des systèmes interactifs. Elle couvre une gamme étendue de logiciels (par exemple les logiciels de bureautique, le contenu Web, l'aide à l'apprentissage et les gestionnaires de documents).
Elle contribue à l'amélioration de l'utilisabilité des systèmes pour une plus grande diversité d'utilisateurs. Bien qu'elle ne couvre pas le comportement ou les exigences en matière de technologies d'assistance (y compris les logiciels d'assistance), elle traite de l'utilisation des technologies d'assistance en tant que composant intégré aux systèmes interactifs.
Elle est destinée aux responsables de la spécification, de la conception, du développement, de l'évaluation et de l'achat de systèmes d'exploitation de logiciels et d'applications logicielles.
Ergonomija medsebojnega vpliva človek-sistem - 171. del: Smernice za dostopnost programske opreme (ISO/DIS 9241-171:2025)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2025
Ergonomija medsebojnega vpliva človek-sistem - 171. del: Smernice za
dostopnost programske opreme (ISO/DIS 9241-171:2025)
Ergonomics of human-system interaction - Part 171: Guidance on software accessibility
(ISO/DIS 9241-171:2025)
Ergonomie der Mensch-System-Interaktion - Teil 171: Leitlinien für die Barrierefreiheit
von Software (ISO/DIS 9241-171:2025)
Ergonomie de l'interaction homme-système - Partie 171: Lignes directrices relatives à
l'accessibilité aux logiciels (ISO/DIS 9241-171:2025)
Ta slovenski standard je istoveten z: prEN ISO 9241-171
ICS:
13.180 Ergonomija Ergonomics
35.080 Programska oprema Software
35.180 Terminalska in druga IT Terminal and other
periferna oprema IT peripheral equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 9241-171
ISO/TC 159/SC 4
Ergonomics of human-system
Secretariat: BSI
interaction —
Voting begins on:
Part 171: 2025-02-07
Guidance on software accessibility
Voting terminates on:
2025-05-02
Ergonomie de l'interaction homme-système —
Partie 171: Lignes directrices relatives à l'accessibilité aux
logiciels
ICS: 13.180; 35.080
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
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STANDARDS MAY ON OCCASION HAVE TO
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RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 9241-171:2025(en)
DRAFT
ISO/DIS 9241-171:2025(en)
International
Standard
ISO/DIS 9241-171
ISO/TC 159/SC 4
Ergonomics of human-system
Secretariat: BSI
interaction —
Voting begins on:
Part 171:
Guidance on software accessibility
Voting terminates on:
Ergonomie de l'interaction homme-système —
Partie 171: Lignes directrices relatives à l'accessibilité aux
logiciels
ICS: 13.180; 35.080
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
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Published in Switzerland Reference number
ISO/DIS 9241-171:2025(en)
ii
ISO/DIS 9241-171:2025(en)
Contents Page
Foreword .viii
Introduction .ix
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 Major accessibility related concepts .1
3.2 Concepts relating to interaction .3
3.3 Concepts relating to the user interface.3
3.4 Concepts relating to individualization .6
3.5 Concepts relating to accessibility features . .7
3.5.1 Major concepts relating to accessibility features .7
3.5.2 Concepts relating to visual accessibility features .7
3.5.3 Concepts relating to audio accessibility features . .8
3.5.4 Concepts relating to audiovisual accessibility features .9
3.5.5 Concepts relating to input features .9
3.5.6 Concepts relating to keyboard-based input features .10
4 Conventions .12
5 Conformance .12
6 Structure and application of this document .13
6.1 External principles and guidance . 13
6.1.1 The accessibility principles of the W3C Web Content Accessibility Guidelines
(WCAG) 2.2 . 13
6.1.2 The accessibility principles of the W3C User Agent Accessibility Guidelines
(UAAG) 2.0 . 13
6.2 The accessibility goals of ISO/IEC Guide 71 .14
6.3 The organization of the guidance in this document. 15
6.4 Achieving accessibility . 15
7 [Goal 1] Requirements and recommendations for achieving suitability for the widest
range of users' needs .16
7.1 To recognize that they are included as a system user within diverse contexts .16
7.2 To have accessible support for using the system .16
7.2.1 Describe accessibility features .16
7.2.2 Provide accessible support services .16
7.2.3 Provide accessible training material .16
7.2.4 Provide user documentation in accessible electronic form .16
7.2.5 Provide accessible feedback mechanisms .17
7.3 To have the system accessible to an individual with combinations of needs .17
8 [Goal 2] Requirements and recommendations for achieving conformity with user
expectations needs . 17
8.1 To not be surprised by the results of interactions with the system .17
8.1.1 Maintain naming consistency .17
8.1.2 Maintain location and ordering consistency .17
8.1.3 Present user notification using consistent techniques .17
8.1.4 Update equivalent alternatives for media when the media changes .18
8.1.5 Use familiar tactile patterns .18
8.1.6 Manage consistent focus .18
8.1.7 Restore state when regaining focus .18
8.1.8 Follow platform keyboard conventions .18
8.1.9 Managing changes of context .19
8.2 To apply personal knowledge and experience to interact successfully with the system .19
8.3 To provide user assistance for knowledge needed to interact with the system .19
iii
ISO/DIS 9241-171:2025(en)
8.4 To provide immediate and easily accessible help or further instructions, where such
help can be provided by the system .19
9 [Goal 3] Requirements and recommendations for achieving support for individualization
needs . 20
9.1 To be provided with the way of interacting with a system that best works for them . 20
9.2 To choose between the available input/output modalities and their configuration
without requiring restart of the system. 20
9.2.1 Enable switching of input/output alternatives . 20
9.2.2 Enable revising or reassigning controls . 20
9.3 To have simultaneous use of alternate interaction modalities . 20
9.3.1 Choosing modalities to be simultaneously available . 20
9.3.2 Switching between simultaneously available modalities . 20
9.3.3 Allow user to select media streams to be presented .
...
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