Biometrics aren’t a great key because they cannot generally be revoked. This isn’t a privacy concern, it’s a security problem. You leave your fingerprints nea

Biometrics aren’t a great key because they cannot generally be revoked. This isn’t a privacy concern, it’s a security problem. You leave your fingerprints nearly everywhere you go, and they only need to be compromised once and then can never be used again. At best, you can repeat this process a sum total of 10 times without taking your shoes off to login.