| 摘要 |
<p>A system and related method for controlling access to building doors or to machines, such as automatic teller machines (ATMs). The system combines high-speed fingerprint matching with another form of identification carried or memorized by a user (10) of the system. In one disclosed embodiment of the invention, the user (10) carries or wears an identification badge (18) that includes a transponder for sending preliminary identification data to an access controller (14) as the user approaches a door (12) through which access is controlled. The controller (14) uses the preliminary identification data, such as an account number or employee number, to access a fingerprint database (44) and retrieve reference fingerprint data previously stored there during an enrollment procedure. If the user's identification includes a "smart card," the reference fingerprint data may stored in the card instead of in the database (44). The retrieved reference fingerprint data are then compared, in a fingerprint correlator (46), with a subject fingerprint image obtained from the user (10) through a fingerprint sensor (16) located near, or integrated into the door (12). A successful match in the correlator (46) verifies the preliminary identification data and results in access to the door or machine being granted to the user. In another form of the invention, the user carries a conventional machine-readable card, which is placed in a card reader (32) to obtain the preliminary identification data. <IMAGE></p> |
