- Success Criterion 2.5.4
- Conformance level A
Shake-to-Undo Feature With No On-Screen Button Equivalent
2.5.4 — Motion Actuation
Scenario
Setting
A telehealth app's video-visit waiting room
What’s wrong
Shake-to-undo / shake-to-report as the only route to that function, no UI control equivalent.
Example
Watch a telehealth app's video-visit waiting room closely and you'll spot this: shake-to-undo / shake-to-report as the only route to that function, no UI control equivalent.
Why it matters
People with tremor and people whose device cannot be moved freely. Here, on a telehealth app's video-visit waiting room, the result is they can't complete the task using a keyboard alone.
How to test
Try to trigger the same function (undo, report) via an on-screen button instead of shaking the device: if no UI equivalent exists, 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
After the fix, the same visitor to a telehealth app's video-visit waiting room can now 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)