Hey people i was just thinking of a idea that would be kinda cool. You know the child lock on the cable/tv set where it ask you to enter a 4 digit code to unlock the channel. Couldnt a child see you enter the pass easily.
How about making a IR transmitter with a RFID card reader so you swipe a card and it sends the correct sequence of numbers to the set (tv/cable) and the child never sees the code.
heh when my son is 10+ i wont need to watch him as much. So its not for now. Also i was thinking of a rfid card which would stay in the adults wallet like a credit card. These are hard to recreate.