Are fingerprints PINs or physical artifacts?
In security and privacy circles today, no good deed goes unpunished. Consider Apple's recent privacy initiative. Under its new encryption policy, Apple can't divulge confidential information about its customers' data, because only the consumer's credentials can unlock the data -- and those credentials are completely under the control of the customer. For added security, Apple layered biometric authentication (fingerprint) on top, so that people wouldn't have to type their passwords/PINs in public, exposing themselves to the dangers of shoulder-surfing.