- Success Criterion 2.5.4
- Conformance level A
2.5.4 · Motion Actuation
Lesson overview · Motion Actuation
In plain language
Shake/tilt/motion features need a normal on-screen control and an off switch.
Who it affects
People with tremor and people whose device cannot be moved freely.
How to check
Identify motion-triggered features: verify a button alternative and a setting to disable motion input.
Common misconception
This rule isn't just about games. Any feature that responds to shaking or tilting, including “shake to undo” in a mainstream app, needs a settings toggle to turn it off.
Learn more
Scenarios in this lesson
- Shake or Tilt Control With No Way to Turn It Off
- Shake-to-Undo Feature With No On-Screen Button Equivalent
- Tilt-Based Scrolling With No Conventional Control Option
- Onboarding Mini-Game Requiring Device Motion With No Alternative
- Motion Input Triggered Accidentally by Hand Tremors
- Wave-to-Advance Camera Gesture With No Button Alternative