Explanation

The motionSimulation value is used to indicate that there is content that simulates motion.

Motion simulation can cause headaches and nausea in some users. In addition to setting this value, the accessibility summary should describe which content is problematic.

Motion simulation can occur in a variety of media: videos or games with a first-person perspective, 3D experiences and animations, etc.

The content that presents a hazard should be noted in the accessibility summary.

The motionSimulation value must never be set together with the none, unknown, noMotionSimuationHazard, or unknownMotionSimulationHazard values, as these values conflict.

Examples

Example 1 — EPUB 3
<meta property="schema:accessibilityHazard">motionSimulation</meta>
<meta property="schema:accessibilityHazard">noFlashingHazard</meta>
<meta property="schema:accessibilityHazard">noSoundHazard</meta>
Example 2 — EPUB 2
<meta name="schema:accessibilityHazard" content="motionSimulation"/>
<meta name="schema:accessibilityHazard" content="noFlashingHazard"/>
<meta name="schema:accessibilityHazard" content="noSoundHazard"/>
Example 3 — Audiobooks
"accessibilityHazard": [
   "motionSimulation",
   "noFlashingHazard",
   "noSoundHazard"
]

ONIX Mapping

The motionSimulation value maps to ONIX list 143 code 17 ("Motion simulation hazard").

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