Your Grease Will Give You Away

By their greasepads ye shall know them:

In ‘Smudge Attacks on Smartphone Touch Screens’-which must have been more fun to name than to write-University of Pennsylvania researchers tested how easily passwords could be extracted from an Android touchscreen using a variety of methods. The answer: very, very easy. Your oily fingers leave a trace so distinct that partial passcodes were, in one set of experiments, identifiable 92% of the time.

There’s a total fingering joke in here, right?