The iPad Air 13 inch with the M2 chip does not have Face ID; it uses Touch ID, a fingerprint sensor built into the top button, so a biometric problem on it is a fingerprint problem, and the causes are simple: a dirty or wet finger, a button that is covered or a fingerprint that needs registering again. Touch ID reads the finger you place on the top button, so the button must be clean and your finger dry, flat and covering the whole button.
The checks in more detail
Dirt, lotion, a cut or a swollen finger after hot water reduce readings. Wipe the button and your finger with a dry cloth. Remove a case or a button protector that covers the sensor, since a thick one prevents the reading. On the Air the button is also the power button, so pressing hard is unnecessary; rest the finger. Open Settings, Touch ID and Passcode, enter the passcode and check that iPad Unlock is on.
Review the fingerprints: delete one that fails often and add it again, rotating the finger through the angles as the screen directs, and cover the sensor fully. Register more than one finger, including the one you use when holding the iPad in landscape. Adding the same finger twice improves its recognition. The iPad Air is held in different ways, with a keyboard folio or a stand, so the finger that is natural in one orientation may not be in another, and registering fingers for each way helps.
The iPad will always ask for the passcode after a restart, an update or five failed attempts, and that is normal. If Touch ID says it is unavailable, restart the iPad and update iPadOS. A button that does not respond, or one that feels stuck, may be damaged by a drop or liquid, and Apple can test it. If the fingerprint is not recognized only in cold weather, warm your hands. Remember the passcode, and consider a longer one for security. Contact Apple with the serial number if the sensor cannot register any fingerprint after cleaning and a restart.
Differential
Likely causes of “Apple iPad Air 13-inch (M2) biometric unlock is not working”, and how to tell them apart
- 1
A dirty or wet finger or button
What separates it Touch ID fails at random
How to confirm Wipe both and dry the finger
- 2
A case or protector over the button
What separates it The sensor cannot read
How to confirm Remove the cover
- 3
A stale fingerprint
What separates it The iPad no longer recognizes you
How to confirm Delete and register it again
- 4
A finger not covering the sensor
What separates it Frequent failures
How to confirm Cover the whole button
- 5
A damaged button
What separates it The sensor does not respond
How to confirm Apple service
Before you touch a setting
Record this first — changing settings destroys the evidence
- Whether a case covers the button
- Which finger fails
- The message shown
- Whether the iPad was dropped
Try in this order
0 of 6 completedWipe the button and finger
ReversibleAnd dry the finger.
Remove any cover
ReversibleFrom the top button.
Delete a failing fingerprint
ReversibleIn Touch ID and Passcode.
Register it again
ReversibleCovering the sensor.
Add a second finger
ReversibleFor landscape use.
Restart and update
ReversibleiPadOS.
Model-specific
What is true of this model and not of its siblings
- Touch ID
- The sensor sits in the top button.
- Registering
- Rotate the finger through angles.
Stop boundary
When this stops being a self-service repair
- !If no fingerprint registers after cleaning and a restart, contact Apple with the serial number
- !Remember the passcode
- !Update iPadOS
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Does the iPad Air have Face ID?+
No, it uses Touch ID in the top button.
Why does it ask for the passcode?+
After a restart or failed tries.
Can I add more fingers?+
Yes.
Is the button the power button?+
Yes.