Face ID is disabled

Question

I use biometric in my application. Users say that Face ID is disabled if the application is not used for about 3 days. After entering the password, the face ID becomes available again. Are there any Apple restrictions when not using the application for a long time? Thank you.

Answer 1

https://support.apple.com/en-us/HT208108:

To use Face ID, you must set up a passcode on your device. You must enter your passcode for additional security validation when:

• The device has just been turned on or restarted.
• The device hasn’t been unlocked for more than 48 hours.
• The passcode hasn’t been used to unlock the device in the last six and a half days and Face ID hasn't unlocked the device in the last 4 hours.
• The device has received a remote lock command.
• After five unsuccessful attempts to match a face.
• After initiating power off / Emergency SOS by pressing and holding either volume button and the side button simultaneously for 2 seconds.