> Are there security schemes or proposals that assume other people don't
know my fingerprints?
Have you never seen someone who unlocks his or her laptop with a
fingerprint reader (and no password, i.e. one-factor authentication)? I
bet that they think this is secure because their fingerprint is just like
a password. Otherwise it is pretty worthless against semi-interested
I am starting to wonder how many laptops don't have the owner's
fingerprints right there, on their surface...