SMK has developed a prototype TV remote control that comes in a totally unexpected scheme factor - that of a water gun. What makes that stand out from regular TV remotes is the fact that it does not need a battery to operate. All the controls are operated via the trigger, relying on an electromagnetic induction coil, high speed rotation gears, a ability circuit, and an infrared light emitting unit to work. Pulling the trigger on the remote will

cause the coil to rotate at a high speed via its built-in gears. that will in turn generate potential that helps the remote get all busy. Pulling the remote once will change the channel, while a couple of consecutive pulls results in turning the TV on or off.

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Orginal post by Rich Brown