LeelooYour fingerprint has expired. Please choose a new fingerprint to continue. You new fingerprint can not be the same as any of the 10 previous fingerprints you have used.
Biometrics is an id, not a password.
Passwords and hardware devices also have an important safety feature that biometrics lack.
When you are cornered by a large dude with a machete asking about your password, you can hand them over and save yourself.
When he tells you to hand over your finger - or even worse, eye - you don't have a lot of options.
This is usually the place where some nerd with no sense of reality bursts in to say that good fingerprint readers can detect a pulse and will refuse to scan a cut off finger. The question then is, is he really going to believe that after cutting off one of your fingers, or is he going to think that you told him the wrong finger and start cutting off fingers until he has one that works, or you run out of fingers?
Kevin Karhan 
@leeloo in fact it's trivial to copy Fingerprints!
- And unlike Passwords there's a very finite amount of possibilities, even if we also take into account toeprints...
@kkarhan
That was my first point.
That was my first point.
Leeloo (@[email protected])
Your fingerprint has expired. Please choose a new fingerprint to continue. You new fingerprint can not be the same as any of the 10 previous fingerprints you have used. Biometrics is an id, not a password.
zygmydI tend to get a lot of side-eye at work when I bring up this very point.
Light@leeloo
It depends how much you value the integrity of your computer and/or the confidentiality of your data Vs your fingers and/or eyes.
I imagine there are high-stakes situations where it's not as clear cut as you are making out.