I want to make my sonic screwdriver unlock doors. Yes I am serious.
I want to take my sonic screwdriver (http://www.thinkgeek.com/geektoys/cubegoodies/8cff/?srp=11) and use it to unlock my bedroom door. I am thinking that if I make an electronic lock that uses a photocell I can just use the light that is in the screwdriver already. I am having trouble finding a lock that will be easy to modify that is cheap. If it is a keypad lock I can probably just replace the buttons with photocells, but I am not sure. Any advice and ideas would be very helpful.