Why is my device not supported? FingerSecurity will only work on Samsung devices with a fingerprint sensor. So your device is not a Samsung device or your Samsung device does not have a fingerprint sensor.
A notification is asking for a backup password. What should I do? This is a security feature from the system(it is not a part of FingerSecurity but from Samsung’s firmware). When you scan your fingerprint too many times without identification then the system will block the sensor and ask for your backup password. The backup password was specified during the registration of your fingerprints(this might not be the same as your alternative password for FingerSecurity). You have to enter your backup password else you can’t use the fingerprint sensor.
I can’t remember my backup password. Unfortunately there is no way to reset the backup password. The only solution is performing a hard reset.