> How then do you explain the success of Touch ID on Apple devices and the equivalent systems on other phones and tablets? Because on those devices the fingerp

> How then do you explain the success of Touch ID on Apple devices and the equivalent systems on other phones and tablets? Because on those devices the fingerprint is only used as a second factor (the first factor being physical possession of a particular device). If Apple used fingerprints like law enforcement do, that is running a fingerprint against the big DB of all prints, then they would certainly get some arbitrary matches.