29 guidance statements support this object characteristic:
- Adjustable volume - For systems that present auditory content, people may need to adjust the volume of the system to a suitable level.
- Appropriate brightness - For systems that present visual content, people may need to change the brightness based on the viewing environment and situation.
- Appropriate speed - For systems that present dynamic images, people may need adjust the presentation speed to enable them to perceive and track them.
- Assistive technology-compatible - For systems with user interfaces, people may need content and operable elements to be accessed and presented through assistive technology.
- Audio characteristics - For systems that present auditory content, people may need to adjust specific characteristics of audio content, cues, and feedback.
- Audio control - For systems that present auditory content, people must be able to control the content ' s auditory content volume independently from the overall system volume level.
- Auditory equivalents - For systems with auditory content, people may need that content presented programmatically or need equivalent visual and tactile versions.
- Avoid contrast changes - For systems that present content, people may need to avoid changes to the foreground color that reduce the contrast with the background color.
- Distinguish auditory components - For systems with multiple auditory components or channels (potentially including assistive technology or accessibility features), people may need to clearly perceive and distinguish the various auditory components and not have them interfere with each other.
- Distinguish tactile components - For systems with multiple tactile components or channels, people may need to be able to clearly perceive and distinguish the various tactile components.
- Distinguish visual components - For systems with multiple visual components, people may need to be able to clearly perceive and distinguish the various visual components and not have them interfere with each other.
- Emotional coping - For systems with triggering content, people may need to to have assistance in coping with my emotional reactions to using the system.
- Findable - People may need to easily locate interactive components and important content.
- Harmful visual content - For systems that provide visual content, people may need to identify flashing, motion, and other visual effects that can harm them and avoid it.
- Identify speaker - For systems with auditory content, people may need to easily identify the relationship between caption text and speaker.
- Magnification - For systems that present visual content, people may need to magnify or resize content.
- Monoaural information - For systems that present multi-channel audio information, including directional information, people may need the same information available in a monoaural form.
- Multiple simultaneous modalities - For systems that present information, people may need the information presented simultaneously in multiple preferred modalities (visual and audio; tactile and audio; visual and tactile; or visual, audio, and tactile).
- Name, role, value, state - Overlap with programmatic structure and relationships.
- No-color equivalents - For systems that use color to indicate meaning, people may need information provided through chromaticity to be available in another visual manner.
- Olfactory equivalents - For systems with olfactory or gustatory content, people may need that content presented programmatically or need equivalent visual, auditory, and tactile versions.
- Output modality choice - As a user with limited or no vision or with limited or no hearing, I need to be able to choose modalities to be used for outputs from the system.
- Scrolling - For systems that present enough content to go outside the viewport, people may need scrolling limited to a single direction.
- Select audio stream - For a system with multiple audio streams, people may need to select and deselect different audio streams.
- Separate output control - For systems with assistive technology built into the platform or that work with assistive technology, people may need to be able to control output of assistive technology separate from output of content.
- Speaker location - For a 3D interface like XR with auditory content, people may need to identify where in space the speaker being captioned is located.
- Speech with visual highlighting - For systems that provide captions, people may need individual words highlighted synchronously with the text that is being spoken.
- Synchronized captions - For system with auditory content, people may need captions synchronized with the main content.
- Visual equivalents - For systems with media content, people may need audio descriptions or a text transcript available.