I recently came across an example of an online security method that I’d never seen before.
The website (for an online course) asked that the user submits a typing test every-time they submit an assignment in order to prevent cheating.
I didn’t know this but apparently we all have a different type pattern, and by looking at the way we type the system can tell if its you typing or someone else.
In terms of practical application, I can’t see it replacing passwords anytime soon, but could form part of a 2-3 part authentication (we wouldn’t want to make it too hard for the user to gain access to their account).