| 摘要 |
In the security system, the user wraps his fingers around a handgrip (2) and inserts his thumb (12) through an aperture (3) in the lock assembly (4). Before access is allowed to the protected volume (6), a CCD video camera (7) scans the thumbprint. The video data is fed to an electronic processor (14) The electronic processor (14) consists of a microprocessor (15), memory (16), image comparator (18) and optional hard copy output device (17). Persistent unsuccessful attempts to gain access will trigger an alarm.
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