Multi-function digital device as a human-input-device for a computer

A method for operating a multi-function device as a controller device, the method comprising:

• placing the multi-function device into a controller mode;
• detecting changes in position of the multi-function device or in an object being applied to the multi-function device;
• computing movement information from changes in position;
• and
• transmitting movement information to a computer.

A display system comprising:

• a computer configured to display information on a display screen;
• a multi-function device coupled wirelessly to the computer, the multi-function device configured to control the display of the information, the controller device comprising
• a controller configured to process information and regulate operation of the controller device;
• a sensor coupled to the controller, the sensor configured to capture information in a movement of the multi-function device or a movement of an object applied to the multi-function device and to provide the information to the controller, wherein the information is used to determine movement information;
• and
• a radio frequency circuit coupled to the controller, the radio frequency circuit configured to exchange information with other devices via a plurality of communications networks, wherein one of the other devices is the computer and the information shared is movement information of the controller device.