Nintendo is on plans for a command that would be used with our rear (the ass would say in Spain). The company has patented a round and inflatable seat that will seat with motion detection.
There is nothing more than an inflatable cushion (not contain sensors) that lets you place the knob on the front so as to make detection of this movement. The new accessory may be called "Wii Saddle Horseback Riding," making direct reference to a horse saddle. (They could also make the game about Aladdin and control the flying carpet haha).
In an attempt to improve the playability of the Wii console and Horseback Riding Saddle become an accessory as it is now the steering wheel, wii fit, the wii perfect shot gun. Mention any of the line of Nintendo Wii.
Importantly, it's not enough just to add more types of controls (controls) to the console. In what really should pay attention is how to improve as the reception of the console encodes the motion. (Which attempted with the wii motion and no much difference) is also discussed in Digital Freedom wit that not only provides a completely new way to control games, but should not be too expensive.