20 guidance statements support this object characteristic:
- 2D alternative to 3D - For systems that provide three dimensional content, people may need three dimensional visual information presented using only two dimensions.
- Appropriate brightness - For systems that present visual content, people may need to change the brightness based on the viewing environment and situation.
- Assistive technology-compatible - For systems with user interfaces, people may need content and operable elements to be accessed and presented through assistive technology.
- 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 if actionable - For systems that include static and interactive components, people may need interactive components to be clearly distinguishable visually and programmatically from static content.
- 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.
- Magnification - For systems that present visual content, people may need to magnify or resize content.
- 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.
- 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.
- Visual equivalents - For systems with media content, people may need audio descriptions or a text transcript available.