That argument works for fingerprints because it’s possible to replicate them (kind of) but how do you replicate someone’s eyeballs assuming supervised setup ?
If we assume "supervised setup", then doesn't that negate the fingerprint issue too because a supervisor can tug off fake-fingers and wash tips with alcohol etc?
Either way, I think this is one of those "if it was used properly, people won't like the limitations, so they'll use it improperly" situations. Kind of like with social security numbers.
No, because nobody trusts full-names or addresses the same dumb way that they wish they could trust iris-data or fingerprint-data.
"Welcome to Acme Bank. To prove you are the owner of this bank-account, please supply your full name and street address. *ding* Authentication successful! Please choose an amount to transfer."
At best, biometrics can only replace usernames. In other words, information that is quasi-public and not expected to be easily changeable... With the additional problem that sometimes it changes all on its own.
