Electronic Devices, Systems, Methods and Computer Program Products for Detecting a User Input Device Having an Optical Marker Thereon

A method for operating a hand-held electronic device by detecting an input on a user input display, the method comprising:

• providing a user input display having a plurality of input keys on the input display, each of the plurality of input keys corresponding to an input function for the input display;
• optically detecting a user input device using an optical detector configured to detect optical data comprising the user input device, wherein the user input device has an optical marker thereon;
• identifying a location of the optical marker of the user input device with respect to the user input display based on the optical data;
• and
• identifying a selected one of the plurality of input keys on the display responsive to the location of the optical marker.

A computer program product for operating a hand-held electronic device by detecting a user input on a user input display, wherein the user input display has a plurality of input keys on the input display, each of the plurality of input keys corresponding to an input function for the input display, the computer program product comprising:

• a computer readable storage medium having computer readable program code embodied in said medium, said computer readable program code comprising:
• computer readable program code configured to optically detect a user input device using an optical detector, wherein the user input device has an optical marker thereon;
• computer readable program code configured to identify a location of the optical marker of the user input device with respect to the user input display based on the optical data;
• and
• computer readable program code configured to identify a selected one of the plurality of input keys on the display responsive to the location of the optical marker.