Increase security while using fingerprint to unlock the vault
I have the possibility to choose between type my password or use my fingerprint to unlock safe-in-cloud in my mobile device. As expected, my master password is very complex and long, so it is easier to use fingerprints. Nevertheless, using that type of authentication brings a builtin weakness, as it is easy to a bad guy to just hold my finger against my will or without my knowledge to open my password vault.
Enable the use of the fingerprint associated to either a pin or the first "n" characters from my password. Thus, after validating my fingerprint, the app would require me the pin or first n characteres of my password.
It is also easy for the bad guy to hold a gun against your head and tell you to put in your pin or else!