The ability to login using a fingerprint has two big downfalls:
1. It causes the user to forget the master password
2. It allows anyone with access to your finger to unlock your account. Anyone asleep or held against their will is vulnerable.
Here is my solution:
Require the first and last characters of the master password to be input in conjunction with the fingerprint login. Two characters total. If they are incorrectly entered then the fingerprint login option would be disabled. This would also help people to remember their password each time.
I think it is madness for anyone who cares about their online security to enable fingerprint login as it stands now. I think this suggestion would solve that problem.
1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided