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eLibrary >
BS EN ISO 9241-171:2025 - TC Tracked Changes. Ergonomics of human-system interaction - Software accessibility >
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BS EN ISO 9241-171:2025 - TC Tracked Changes. Ergonomics of human-system interaction - Software accessibility, 2026
- A-30467885.pdf [Go to Page]
- undefined
- 3.1 Major accessibility related concepts
- 3.2 Concepts relating to interaction
- 3.3 Concepts relating to the user interface
- 3.4 Concepts relating to individualization
- 3.5 Concepts relating to accessibility features [Go to Page]
- 3.5.1 Major concepts relating to accessibility features
- 3.5.2 Concepts relating to visual accessibility features
- 3.5.3 Concepts relating to audio accessibility features
- 3.5.4 Concepts relating to audiovisual accessibility features
- 3.5.5 Concepts relating to input features
- 3.5.6 Concepts relating to keyboard-based input features
- 6.1 External principles and guidance [Go to Page]
- 6.1.1 Accessibility principles of the W3C Web Content Accessibility Guidelines (WCAG) 2.2
- 6.1.2 Accessibility principles of the W3C User Agent Accessibility Guidelines (UAAG) 2.0
- 6.2 Accessibility goals of ISO/IEC Guide 71
- 6.3 Organization of guidance in this document
- 6.4 Achieving accessibility
- 7.1 To recognize that users are included as system users within diverse contexts
- 7.2 To have accessible support for using the system [Go to Page]
- 7.2.1 Describe accessibility features
- 7.2.2 Provide accessible support services
- 7.2.3 Provide accessible training material
- 7.2.4 Provide user documentation in accessible electronic form
- 7.2.5 Provide accessible feedback mechanisms
- 7.3 To have the system accessible to an individual with combinations of needs
- 8.1 To not be surprised by the results of interactions with the system [Go to Page]
- 8.1.1 Maintain naming consistency
- 8.1.2 Maintain location and ordering consistency
- 8.1.3 Present user notification using consistent techniques
- 8.1.4 Update equivalent alternatives for media when the media changes
- 8.1.5 Use familiar tactile patterns
- 8.1.6 Manage consistent focus
- 8.1.7 Restore state when regaining focus
- 8.1.8 Follow platform keyboard conventions
- 8.1.9 Managing changes of context
- 8.2 To apply personal knowledge and experience to interact successfully with the system
- 8.3 To provide user assistance for knowledge needed to interact with the system
- 8.4 To provide immediate and easily accessible help or further instructions, where such help can be provided by the system
- 9.1 To be provided with the way of interacting with a system that best works for them
- 9.2 To choose between the available input and output modalities and their configuration without requiring restart of the system [Go to Page]
- 9.2.1 Enable switching of input and output alternatives
- 9.2.2 Enable revising or reassigning controls
- 9.3 To have simultaneous use of alternate interaction modalities [Go to Page]
- 9.3.1 Choosing modalities to be simultaneously available
- 9.3.2 Switching between simultaneously available modalities
- 9.3.3 Allow user to select media streams to be presented
- 9.4 To be provided with information on available options for interacting with a system on which to base a choice of interaction methods
- 9.5 To be provided with an accessible means to choose individualization features [Go to Page]
- 9.5.1 Enable individualization of user-preference settings
- 9.5.2 Enable adjustment of attributes of common user-interface elements
- 9.5.3 Enable individualization of the user interface
- 9.6 To have individualization features maintained for future uses of the system, until changed by the user [Go to Page]
- 9.6.1 Utilize user-preference profiles
- 9.6.2 Provide a means of restoring system defaults
- 9.6.3 Minimize the need to restart for changes
- 9.7 To provide pre-defined preference profiles
- 9.8 To take or give up control of functions that can be performed by either the user or the system
- 9.9 To have the option to use the system with a minimum of setup or configuration
- 9.10 To customize important functionality: a new user accessibility need (UAN) [Go to Page]
- 9.10.1 Manage key input functionalities
- 9.10.2 Manage pointer functionalities
- 9.10.3 Manage visual attributes
- 9.10.4 Manage auditory attributes
- 9.10.5 Manage language selection
- 9.10.6 Manage windowing functionalities
- 9.10.7 Manage functionalities providing content alternatives
- 9.10.8 Manage animation functionalities
- 9.10.9 Adjust the scale and layout of user-interface elements as font-size changes
- 10.1 To have the system free from any physical barriers
- 10.2 To have the system free from any psychological barriers
- 10.3 To have the system maintain the user's attention [Go to Page]
- 10.3.1 Engage the user's attention
- 10.3.2 Enable user rest breaks
- 10.4 To have interaction options clearly presented
- 10.5 To have appropriate levels of privacy and security
- 10.6 To avoid patterns that cause psychological or physical discomfort or disturbance [Go to Page]
- 10.6.1 Avoid seizure-inducing flash rates
- 10.7 To use the system remotely as well as directly
- 10.8 To have the system free from environmental barriers
- 11.1 To use a specific sensory modality (or a set of specific modalities) to perceive information [Go to Page]
- 11.1.1 To have information presented visually
- 11.1.2 To have visual information available in other modalities
- 11.1.3 To have information presented in auditory form
- 11.1.4 To have audio information available in other modalities
- 11.1.5 To have information in tactile form
- 11.1.6 To have tactile information also available in other modalities
- 11.1.7 To experience information via multiple simultaneous modalities
- 11.2 To have presentation attributes of a modality that match an individual's needs [Go to Page]
- 11.2.1 To have presentation attributes specific to the visual modality that match an individual's needs
- 11.2.2 To have material printed
- 11.2.3 To have sign language perceivable
- 11.2.4 To have 3-dimensional visual information presented using only two dimensions
- 11.2.5 To have presentation attributes specific to the auditory modality that match an individual's needs
- 11.2.6 To select or deselect different audio streams
- 11.2.7 To have presentation attributes specific to the tactile modality that match an individual's needs
- 11.2.8 To have visual or tactile feedback occur at the same location as the control
- 11.3 To distinguish among the different components of information that are being presented [Go to Page]
- 11.3.1 To distinguish between different components without them interfering with one another
- 11.3.2 To prevent actions which would unintentionally decrease information perceivability
- 11.3.3 To locate and identify all actionable components without activating them
- 11.3.4 To have actionable components look, sound or feel distinctive from non-actionable components
- 11.3.5 To have sufficient landmarks and cues to navigate to the necessary locations, functionalities or controls to carry out a task
- 11.3.6 To have distinct recognizable signals for different alerts or other messages that use signals
- 11.4 To perceive information regardless of environmental or other conditions that might interfere [Go to Page]
- 11.4.1 To perceive foreground information in the presence of background information
- 11.4.2 To avoid distractions that prevent focusing on a task
- 11.4.3 To have accessibility features not interfere with perception of standard information
- 11.4.4 To have only the content necessary for the current task presented
- 11.4.5 To have haptic input and output from devices not interfere with the perception of information
- 11.5 To not have one's senses overloaded
- 11.6 To have attention drawn to critically important information in the appropriate modality, form, and language
- 12.1 To obtain information on the system and its components and functionalities [Go to Page]
- 12.1.1 To get an overview and to orient the users to the system and its functions and components
- 12.1.2 To obtain and use unique names for every user interface component
- 12.1.3 To receive training that supports an individual's cognitive needs
- 12.1.4 To receive help that supports an individual's cognitive needs
- 12.1.5 To receive recommendations that aid a user's understanding
- 12.2 To understand information presented by the system [Go to Page]
- 12.2.1 To have presented information as easy to understand as possible
- 12.2.2 To have individual linguistic requirements supported by the system
- 12.2.3 To have individual cultural requirements supported by the system
- 12.2.4 To have text alternatives be provided for all non-textual information
- 12.2.5 To have information provided pictorially as well as via text
- 12.2.6 To customize abstract symbols with alternative representations
- 12.2.7 To have language presented in a particular modality and format
- 12.3 To have information that supports an individual's cognitive needs [Go to Page]
- 12.3.1 To have information presented in a manner that supports an individual's styles of reasoning
- 12.3.2 To avoid unnecessary high cognitive demands
- 12.3.3 To have navigation that supports an individual's thinking style
- 12.3.4 To have assistance with remembering and recalling information
- 12.4 To have the steps for completing tasks optimized to match an individual's needs and clearly explained [Go to Page]
- 12.4.1 Optimize the number of steps required for any task
- 12.5 To have cues to support the individual in completing tasks [Go to Page]
- 12.5.1 Provide notification about toggle-key status
- 12.5.2 Provide implicit or explicit designators
- 12.5.3 Provide notification of progress
- 12.6 To have feedback showing the results of actions
- 12.7 To have sufficient time to interact with the system [Go to Page]
- 12.7.1 To have sufficient time to understand displayed or presented information
- 12.7.2 To have information necessary to plan actions available in advance
- 12.7.3 To plan a series of actions in advance
- 12.8 To access support when needed
- 13.1 To use a specific sensory modality (or a set of specific sensory modalities) for inputs to the system [Go to Page]
- 13.1.1 To have alternate modalities of input to the system
- 13.1.2 To use the tactile modality as a source of inputs to the system
- 13.1.3 To use sound as a source of inputs
- 13.1.4 To use visual recognition as a source of inputs
- 13.2 To control attributes of an input or interaction modality to match an individual's needs [Go to Page]
- 13.2.1 To have acceptable input or interaction attributes specific to the tactile modality
- 13.2.2 To have acceptable input or interaction attributes specific to the auditory modality
- 13.2.3 To have acceptable input or interaction attributes specific to the visual modality
- 13.2.4 To position system components and devices in suitable locations for their use
- 13.3 To use a specific interaction method to provide inputs to the system [Go to Page]
- 13.3.1 Keyboard-based interactions
- 13.3.2 Pointer-based interactions
- 13.3.3 Speech-based interactions
- 13.3.4 Gesture-based interactions
- 13.4 To perform the task using specific types of action [Go to Page]
- 13.4.1 To have a means of shifting the focus from one interface component to another interface component
- 13.4.2 To perform the task using various parts of the body
- 13.4.3 To have a method to fully operate the system that does not require simultaneous actions
- 13.4.4 To interact with the system at one's own pace
- 13.4.5 To have a method to fully operate the system that does not require direct body contact
- 13.4.6 To have specific interaction features: a new user accessibility need (UAN)
- 13.5 To perform supporting and maintenance tasks related to the use of the system that other users are expected to undertake
- 13.6 To control the environment (to the extent possible) to prevent interference with performing the task [Go to Page]
- 13.6.1 General
- 13.6.2 Avoid interference with accessibility features
- 13.7 To access the controls that allow them to turn on and adjust the built-in accessibility features [Go to Page]
- 13.7.1 Make controls for accessibility features discoverable and operable
- 13.7.2 Inform user of accessibility feature “On” or “Off” status
- 13.7.3 Inform user of accessibility feature activation
- 13.7.4 Provide capability to use preference settings across locations
- 13.8 To have a suitable level of autonomy
- 14.1 To be provided a means to successfully accomplish tasks
- 14.2 To avoid making mistakes in completing tasks
- 14.3 To complete tasks in an efficient manner relative to one's own abilities
- 14.4 To perform tasks with a minimum of physical exertion
- 14.5 To perform tasks with a minimum of cognitive exertion
- 14.6 To operate the system without becoming fatigued
- 14.7 To complete tasks within the available time
- 14.8 To be satisfied with the outcome of interacting with the system
- 14.9 To have comparable satisfaction that the system is worth using to that of other users
- 15.1 To have confidence that using the system will be free from negative consequences or unacceptable risks [Go to Page]
- 15.1.1 Avoiding negative consequences
- 15.1.2 Avoiding motion sickness
- 15.1.3 Avoiding unexpected major changes
- 15.2 To explore a system without unintentionally activating components or their functionalities [Go to Page]
- 15.2.1 Support exploration without unintentionally activating functions
- 15.2.2 Safeguard against inadvertent activation or deactivation of accessibility features
- 15.3 To accomplish tasks in spite of the occurrence of errors [Go to Page]
- 15.3.1 Allow warning or error information to persist
- 15.4 To detect when errors have been made [Go to Page]
- 15.4.1 Notify the user when errors are detected
- 15.4.2 Provide information about the error that has occurred
- 15.5 To recover from errors made from interacting with the system [Go to Page]
- 15.5.1 Facilitate navigation to the location of errors
- 15.5.2 Assist with error correction
- 15.6 To reset a system to an earlier or original condition as a means of responding to errors
- 15.7 To avoid errors by making negative consequences be obvious, easy to avoid, and difficult to trigger
- 16.1 To use a system in a manner that is as similar as possible to other users
- 16.2 To use a system in a manner that is equivalent to that of other users, even if the manner of use is different
- 16.3 To have available alternate ways of interacting with a system that match a user's needs [Go to Page]
- 16.3.1 Provide alternative means of interaction that match users' needs
- 16.3.2 Provide alternatives when assistive technology (AT) is not operable
- 17.1 To use their own assistive products or assistive technology (AT) to interact with all the functionalities of the system [Go to Page]
- 17.1.1 Make interactions available to assistive technology (AT)
- 17.1.2 Make user-interface element information available to assistive technologies
- 17.1.3 Make feedback and messages available to assistive technology (AT)
- 17.1.4 Make event notification available to assistive technologies
- 17.1.5 Enable communication between software and assistive technology (AT)
- 17.1.6 Use standard accessibility services
- 17.1.7 Allow assistive technology (AT) to change focus and selection
- 17.1.8 Allow assistive technology (AT) to access resources
- 17.1.9 Use system-standard input and output
- 17.1.10 Enable appropriate presentation of tables
- 17.1.11 Accept the installation of keyboard and pointing device emulators
- 17.1.12 Allow assistive technology (AT) to monitor output operations
- 17.2 To have the interaction between the system and assistive technology be without interference [Go to Page]
- 17.2.1 Support combinations of assistive technologies
- 17.2.2 Avoid interference between assistive technologies
- 17.3 To have specific accessibility functions available at all times, without disruption [Go to Page]
- 17.3.1 Pass through of system functions
- 17.3.2 Restore hidden accessibility functions [Go to Page]
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