Android 8.1多久询问密码而不是指纹？ -- password 领域 和 finger-print-scanner 领域 和 8.1-oreo 领域 android 相关 的问题

I use fingerprint to unlock my phone (Nokia 6 TA1033, upgraded to Oreo 8.1, not rooted). Sometimes it doesn't let me use fingerprint and asks for a password instead "for better security". I can't predict when this happens. Is there a way to prevent this? Like maybe unlock with a password on every nth wake-up so that I don't have to type the password in an uncomfortable situation?

Sometimes it is just really inconvenient to type the password, especially when your password is long. Also I believe in public places it is better to unlock with a fingerprint because then no one can see what you type.

On stock Android, a backup authentication method is required after 5 failed attempts, or 48 hours since the last time that backup authentication method is used.

Using a screen off app will trigger this immediately, as that's how they trigger the screen off.

In Android 8.1, password input in required when the phone is rebooted or is locked by administrator (e.g. a screen locker app). You may use a pin-code instead to ease the unlock process. Face recognition is also a good way to unlock your phone.