Patent ID: 7447911

Claim:
An electronic identification key to be connected to a terminal system to execute at least one specific operation, the electronic identification key comprising: a housing; a standard interface connector disposed on the housing and to be connected to the terminal system; a fingerprint sensor, which is disposed on the housing, for sensing a fingerprint of a user; an AP (Application Program) memory module, which is disposed in the housing, for storing a plurality of application programs and a set of reference fingerprint data; and a control microprocessor disposed in the housing and unremovably electrically connected to the standard interface connector, the fingerprint sensor and the AP memory module, wherein: the control microprocessor communicates with the terminal system by handshakes so as to upload an initializing program, which is suitable for the terminal system, from the electronic identification key to the terminal system, and the terminal system automatically runs the initializing program and then displays an application program menu on a user interface such that the user can make a selection; the control microprocessor enables the terminal system to automatically run one fingerprint application program, which is suitable for the terminal system, among the application programs according to the selection made by the user on the application program menu; the control microprocessor controls the fingerprint sensor to read the fingerprint of the user to obtain scanned fingerprint data, which is transferred to the terminal system according to the fingerprint application program executing in the terminal system; the control microprocessor further transfers the set of reference fingerprint data to the terminal system; and the terminal system processes the scanned fingerprint data, judges whether the scanned fingerprint data and the set of reference fingerprint data substantially match with each other, and executes the at least one specific operation if yes, wherein at least one application program among the plurality of application programs and corresponding to the at least one specific operation is transferred from the AP memory module to the terminal system for installation and execution.