- Success Criterion 2.5.4
- Conformance level A
Motion Input Triggered Accidentally by Hand Tremors
2.5.4 — Motion Actuation
Scenario
Setting
A photo-sharing app's upload screen
What’s wrong
Motion input that can be triggered accidentally (tremor) with no setting to turn it off.
Example
On a photo-sharing app's upload screen: motion input that can be triggered accidentally (tremor) with no setting to turn it off.
Why it matters
People with tremor and people whose device cannot be moved freely. The practical effect on a photo-sharing app's upload screen: they lose track of where they are on the page.
How to test
Hold the device with a slight natural tremor: if the motion feature triggers accidentally with no setting to turn it off, it fails.
How to fix
A conventional on-screen control must duplicate the motion-triggered feature, and motion input must be able to be turned off.
Outcome
That one change on a photo-sharing app's upload screen means they keep track of where they are on the page.
Who is affected
People with tremor and people whose device cannot be moved freely.
Learn more
- Understanding Understanding document (opens in a new tab)