You may recall the mydevice, that tilt-controlled cellphone from MyOrigo. Now a company called ECER Technology is basically offering the same thing for PDAs and smartphone in the form of a special attachment called the TiltCONTROL:
The TiltCONTROL device contains a tiny Accelerometer, which can be used to measure the horizontal and vertical tilt of itself. This tilt angle information is transferred to the attached mobile computing device, where it is processed. Once the angle of tilt has been calculated this information can be used by any application to control what is on the screen, or perform any number of tasks based on the acceleration and tilt of the device.
