Patent ID: 7657731

Claim:
A computer system comprising: an identification device comprising: a first wireless module for receiving a radio identification signal and then emitting a radio user signal with an identification code; and a memory for storing the identification code; and a host comprising: an input interface for generating an input signal; a second wireless module for receiving the radio user signal; a control module for providing an access control signal when no user signal is received by the second wireless module, and for checking whether the identification code within the user signal matches a predetermined identification code as the second wireless module receives the user signal; if the identification code within the user signal matches the predetermined identification code, the control module is capable of generating an access allowable signal; and a processing module for performing an application program for controlling the operation of the computer system based on the input signal provided by the input interface; while performing the application program, if receiving the access control signal, the processing module handles the application program according to the signal received from the input interface, if the processing module receives the access allowable signal from the control module, the processing module recovers the input interface to control the status of the application program based on the input signal from the input interface; wherein the first wireless module is also capable of generating a corresponding electrical data signal while receiving a radio data signal, and the memory is capable of storing the electrical data signal.