Patent ID: 6624739
Filing Date: 2003-09-23
Classification: G07C

Abstract:
An access control system connected over a network to a code-evaluation device to provide access based on a comparison of a person's biometric characteristics with biometric data stored in a memory, the system comprising:(a) at least one mobile transponder to be carried by the person, said transponder having an authorization code; and (b) at least one local control station comprising: (i) a reader by which said authorization code of said transponder can be read as the transponder is moved close to the reader in a non-contact manner and can be transmitted over the network to the code-evaluation device; (ii) a recording device operated by said transponder for recording inalienable biometric characteristics of the person carrying the transponder; and (iii) a comparator coupled to said transponder for comparing locally within said control station the recorded biometric characteristics to the stored biometric data; wherein a local comparison of the recorded biometric characteristics to stored biometric data is carried out to obtain a comparison result and depending on the comparison result: (1) a data word containing the authorization code is transmitted over the network to the code-evaluation device only when a match exists between the recorded biometric characteristic and the stored biometric data; or (2) the data word containing the authorization code is transmitted over the network to the code-evaluation device constantly, and the comparison result is contained in the data word.