| 摘要 |
An access control system including a base station located near a stationary target site used to control access to the stationary target site and satellite access station coupled to the exterior of a satellite target site used to control access to the satellite target site. The base station includes an identification device, storage device, a control unit, a user interface and a transceiver. A master database containing a list of access information for all of the satellite access stations is stored in the storage device. Each satellite access station includes a second identification device, a second storage device, a control unit and a second transponder. A satellite database contains a list of access information for the satellite target site. Information contained in the master database for a particular satellite access station is provided to the particular satellite access station and stored in the satellite database.
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