Method and apparatus for personal verification utilizing nonpredictable codes and biocharacteristics
Patent 4998279 Issued on March 5, 1991. Estimated Expiration Date: 
January 18, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 18, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3752904 3764742 3806874 3886451 3900867 Transmit phase control system of synchronization burst for SDMA/TDMA satellite communication system Asynchronous digital locking system Method of and means for processing an audio frequency signal to conceal intelligility Method and apparatus for ciphering and deciphering messages Method and apparatus for synchronizing the ciphering and deciphering of binary-coded messages InventorApplicationNo. 298039 filed on 01/18/1989US Classes:340/5.52, Biometrics235/380, Credit or identification card systems235/382, Permitting access340/5.84, Voice379/189, Fraud or improper use mitigating or indication (e.g., "blue box", "black box")379/199, At substation379/903, PASSWORD380/28, PARTICULAR ALGORITHMIC FUNCTION ENCODING713/186Biometric acquisitionExaminersPrimary: Buczinski, Stephen C.Assistant: Gregory, Bernarr E. Attorney, Agent or FirmForeign Patent References
International ClassesH04K 001/02H04L 009/20 G07F 007/08 AbstractA personal verification system comprising a user device which is adapted to generate a time varying, multi-character, nonpredictable code; a verification device; a mechanism for permitting the user to communicate the nonpredictable code generated by the user device at a given time to the verification device in a manner such that a biocharacteristic of the user is communicated with each code character; the verification device including a mechanism for generating the same nonpredictable code as is appearing at the user device at the given time, a mechanism for converting each character of the generated nonpredictable code to an indication of the character which includes the biocharacteristic; and, a mechanism for comparing the communicated characters including biocharacteristics with the character indications including biocharacteristic, and a mechanism for indicating verification if the compared characters, including the biocharacteristic, match in a predetermined way.Other References
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