> Yet again, there are three basic classes of common authentication factors: something you know, something you have, and something you are. Biometrics belong to

> Yet again, there are three basic classes of common authentication factors: something you know, something you have, and something you are. Biometrics belong to the "something you are" class. It's so odd to me that we consider fingerprints "something you are". Fingerprints surely are "something I have" in that I can lose them by disfigurement or maiming. "Something I am" is more like my DNA which can't be taken from me to the point of loss, unlike someone cutting off my fingers which would deny me access to whatever system it's used for.