Digital forensics can identify you by the way you type

Dan Goodin, for Ars Technica:

The profiling works by measuring the minute differences in the way each person presses keys on computer keyboards. Since the pauses between keystrokes and the precise length of time each key is pressed are unique for each person, the profiles act as a sort of digital fingerprint that can betray its owner’s identity.

When you think about it, everything you are is a print, everything you do is a signature.