If they ever require fingerprints for voting, we’re screwed.
How does this involve voting? The Authentec chip (Authentec is now owned by Apple) stores portions of the fingerprint (you do NOT need to roll your fingerprint onto the screen. You touch the button several times (this registers a 360 degree rotation of how you touch the home button) with several fingers. Those fingers don't even have to belong to you (spouse can put a finger or two). I don't know how many fingerprints can be logged onto the account. The fingerprint is stored in the A7 chip - where it is used to identify YOU to the phone. That's it. Your fingerprint never leaves the phone - it was designed and built with security in mind. The iPhone simply says "You are YOU - I know this by your fingerprint or by your passcode". If someone steals your phone - the iPhone will now that who ever is attempting to use the phone is not a legitimate user. Because they are illegitimate, there are some things they are NOT allowed to do. Like, reset the phone.