Patent ID: 7539830

Claim:
A portable storage device, comprising: a control module having a microprocessor, a random access memory (RAM) and a read only memory (ROM), wherein the RAM serves as a working memory for data processing, the ROM stores firmware for enabling the storage device to work, and the control module has a host interface to be electrically connected to a terminal host; a biometrics sensor electrically connected to the control module; and a storage unit electrically connected to the control module through a standard interface, wherein: the firmware stored in the control module enables the storage unit, the biometrics sensor and the terminal host to communicate with one another; the firmware divides the storage unit into a plurality of blocks, the plurality of blocks has a biometrics application program (AP) block designed as a compact disk drive and a public block designed as a disk and the biometrics application program block stores at least one biometrics application program; the firmware enables an operation system of the terminal host to treat the biometrics application program block as the compact disk drive after the control module is connected to the terminal host, so that the operation system of the terminal host automatically runs the at least one biometrics application program, stored in the biometrics application program block, as a background AP; the firmware enables the operation system of the terminal host to close or disable the compact disk drive immediately after the at least one biometrics application program is run as the background AP and before the biometrics sensor senses biometrics feature data, and to treat and access the public block as a first disk.