Well, I had a guy that just had to have biometric front door and not push button or keypad. You could install a yale touscreen and not use any keypad codes at all (or maybe one backup) and install this by the door and just in programming say when the finger is approved unlock the door. Tough way of getting biometric door lock but thats a use I could have used (job long gone now unfortunately). I suppose you could use a 1200lb access control magnetic lock as well for residential and have no visible deadbolt if they had another door in the home in the event of failure. Either way sounds great!