Unless you've lost your phone, in which case your fingerprints are all over the device, and if they want to log in, they have to reconstruct it using "informati

Unless you've lost your phone, in which case your fingerprints are all over the device, and if they want to log in, they have to reconstruct it using "information" already on it. Granted re:casual interloper. And your friend just shoulder-surfed you, he didn't reverse engineer anything ;)