| 摘要 |
An access control system, comprises at least one door to a secured area, each door having a strike plate, a host computer. The access control system further comprises at least one electro-mechanical key to independently actuate a lock that corresponds to the door(s). The host system records information selected from the group consisting of time of entry, place of entry, identification of entered party, and/or any combination thereof. In addition, a door knob and mechanical locking mechanism selectively latches and unlatches the locking mechanism and can be actuated with a mechanical key; and circuitry to actuate the locking mechanism to selectively latch so that the door can open, the circuitry actuated by an electrical signal transmitted by an electrical key, the electrical signal communicated by an electrical contact extending through the mechanical locking mechanism. The circuitry is powered by a battery, which can be removed without disturbing or actuating unlocking mechanism. A master rekeying device comprises input/output circuitry to receive and transmit electrical signals, circuitry coupled to the input/output circuitry to record a list of security passwords in order to check passwords against the list and a memory to store data; and the input/output circuitry also receives and transmits electrical signals to a host computer.
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