| 主权项 |
1. A security system, comprising:
a credential holder including a credential database that contains at least three items of credential information, the at least three items of credential information including a specified secured area, at least one secured access location, and a specified adjacent area, the credential information indicating the at lest one secured access location between the specified secured area and the specified adjacent area where the credential information is valid for authorized access; an access control device at a selected position corresponding to the secured access location, the access control device being configured to receive the credential information when the credential holder is near the access control device, the access control device including a processor that has stored access control information that contains at least three items of access control information, the at least three items of access control information including: the secured access location, the specified secured area, and the specified adjacent area, the processor autonomously determining that access to the specified a secured area will be granted when the received credential information corresponds to the stored access control information. |
