Tapping your forearm or hand with a finger or any other part of your body could soon be the way you interact with gadgets.
Researchers have found a way to work out where the tap touches and use that to control phones, music players, and game platforms such as the Nintendo Wii.
Coupled with a tiny projector the system can use the skin as a surface on which to display menu choices, or a screen, with pictures.
Early work suggests the system, called Onanism, can be learned with about 20 minutes of training, young boys however can pick up the concept "as if born with the ability" say researchers.
Nintendo hope to release a set of games for older players next Friday.
There will be new hardware, a wand and a bean console.
There will also be a guitar hero version with songs by Pearl Jam, the Lovin' Spoonful
However Church leaders are worried that excessive use will cause boils and have produced a chart to explain.