Lock AirBill with Face ID or your passcode

Turn on App Lock so your bookkeeping is behind the same unlock you already use for your phone — Face ID, Touch ID, or your device passcode.

App Lock, in the preferences on your Profile, puts your administration behind your phone’s own unlock. It doesn’t create a separate AirBill code — it asks your device to confirm it’s you, using whatever you already have set up there. The line under the title says which method will be used, for example “Use Face ID to unlock”.

Flip the toggle to switch it on; AirBill asks you to authenticate first. Switching it off asks for authentication too, so someone holding your unlocked phone can’t quietly disable it.

The App Lock row in your preferences. The line underneath names the unlock method your phone will use.

When AirBill asks you to unlock

With App Lock on, you unlock when you start the app while still signed in, and when you come back to AirBill after it has been in the background for a longer stretch — about half an hour. Switching to another app briefly and coming straight back doesn’t ask again.

Common problems

Face ID isn't offered, only the passcode

No biometrics are enrolled on the phone, or they’ve stopped being recognised. Check Face ID or Touch ID in your device settings; AirBill uses whatever your phone provides.

You're asked to unlock more often than you expected

A fresh launch always asks, on top of the return-from-background check.

You want to stop AirBill opening on this phone at all

App Lock protects the app on a phone you keep. If you’re handing the phone on, sign out instead — see Sign out of AirBill.