TV-B-GoneTV-B-Gone is a type of simple universal remote control device for turning off television sets, developed and sold by Mitch Altman. The device was designed to be able to turn off a large majority of the current available brands of television sets. It was created to allow people in a public place to turn off nearby television sets, presumably because the broadcast was distracting them from other activities. Its inventor has referred to it as "an environmental management device". The device is part of a key-chain, and, like other remote devices, is battery-powered. Although it can require up to 69 seconds for the device to find the proper code for a particular television receiver, the most popular televisions turn off in the first few seconds.
http://en.wikipedia.org/wiki/TV-B-Gone