I was thinking of adding an engine start button to my car, which is quite easy btw, and I had an epiphany. Why couldn't I just change the push button to a finger print scanner for the most in car security!! All the ones I have seen though are USB. Do you guys think that I need to install the computer before adding this in order for it to work? Anyone done this or tried this before? The USB scanners I think are more intended for password bypasses for websites and the such.