• Success Criterion 2.5.4
  • Conformance level A

Onboarding Mini-Game Requiring Device Motion With No Alternative

2.5.4 — Motion Actuation

Scenario

Setting

A nonprofit's donation form

What’s wrong

Device-orientation mini-games in onboarding gates with no alternative and no disable.

Example 

window.addEventListener('deviceorientation', (e) => {
  ballPosition = mapTiltToPosition(e);
  if (ballInTarget(ballPosition)) unlockDonateButton();
});
// donateBtn stays disabled until the tilt mini-game is won

Why it matters

A donor who can't tilt their device to roll a ball into a target is blocked from giving money at all.

How to test

Try to pass an onboarding step via a button instead of a device-orientation gesture: if there's no alternative and no way to disable the requirement, it fails.

How to fix

Never gate a core task like donating behind a motion-only interaction; add a skip that unlocks the same way.

<button id="skipGame" onclick="unlockDonateButton()">Skip and continue to donate</button>

Outcome

A donor with limited mobility taps Skip and reaches the donation form immediately.

Who is affected

Wheelchair users, people with limited arm or wrist movement, and anyone with the phone fixed in a stand or mount.

Learn more

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