You do not have to worry about your children watching vulgar programmes on Television. You do not also need to block those channels. The scientists from Arizona University has designed a remote which recognizes the children and shows only those programmes which can be watched by them. The remote senses the user from the way the channels are changed. Use a pin number when you are using the remote for the first time, and the remote recognizes it when you use it afterwards. It allows certain channels to be viewed by certain people.\