A computer navigation device includes a movement sensor and a trigger device activated by a timer. The computer navigation device periodically transmits to a host computer a pre-defined signal corresponding with the signal that would otherwise be generated by the movement sensor on detection of specific movements of the computer navigation device.

 
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> Recording medium having data structure for managing reproduction of still pictures recorded thereon and recording and reproducing methods and apparatuses

> Method and system to alert user of local law via the Global Positioning System (GPS)
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