That's great! Perfect if you have a Laptop and don't want to hack a keyboard. I just hacked an old keyboard circuitboard..found the two wires for ENTER and viola! Here it is triggering VSA which starts the skull routine. I think your idea is more fun though!
I have similar approach, my device sits there monitors for Tots and hits the keys for me when needed. I call it my son, he gets a few bucks or all the candy he wants..........