[794CD01]

They are password replacements in most contexts. The point of a password is usually just to verify your identity. Biometrics can do that just fine.

[charonn0]

Biometrics are good replacements for usernames, but not for passwords. Biometrics can't be changed in the event of a breach, and can be taken from you surreptitiously or by force.

[794CD01]

Yes, and those features are not necessary in most scenarios passwords are currently used.

[infogulch]

Biometrics can be fooled, and even if they couldn't they can only verify your identity. They can't verify your volition.

[794CD01]

They can be fooled now, but that is an implementation flaw, not a problem with the concept. I wouldn't cite the weakness of unsalted MD5 hashes as a problem with the concept of passwords.

I agree with your assessment of what biometrics can and cannot do. That is why I specifically said that in most situations, passwords are only used to verify someone's identity, and thus can be replaced with biometrics.