Abstract: A mechanism for sensing the changing positional and orientation of a hand held device as it is moved by the device user to control the state or operation of the hand held device and one or more vibrotactile transducers positioned on the body of the hand held device to provide haptic feedback stimuli to the user indicative of the state of the device. The mechanism employs the combination of accelerometers for obtaining inertial data in three degrees of freedom, gyro sensor for obtaining roll, pitch and yaw angular motion data, a GPS system for providing position data, and magnetometers for providing directional data. This sensor data may be used to control the functioning of the hand held device; for example to control display scrolling, and the vibratory stimuli fed back to the user provides an indication of the effects of the gestural movements the user imparts to the device.