Very good ideas.
Additionally, Jolla should include a timer that automatically disables the fingerprint scanner after a certain amount of time. Because the problem with the “double power button click should disable fingerprint” is that you cannot disable the fingerprint scanner if you lose your device, or it is stolen.
Justification:
Suppose the timer is set to 1 hour. After you unlock your phone with the pin code, they can unlock your device with the fingerprint for 1 hour. If your device was stolen and the thief has the know-how to copy a fingerprint from your phone, he needs time to do it.
Let’s say he stole your phone and needs 30 minutes to go home and for example 1 hour to make a copy of a fingerprint from your phone. Doesn’t do him any good then either, because the scanner has long since been deactivated.
because there are situations in some countries when you can be forced to apply your finger to fingerprint scanner.
So in such situations ability to quickly “block” fingerprint unlocking is essential.
But in these situations can the user not also be forced to unlock the device with the pin-code?