Personal security system
November 25, 2012. 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 3806874 Method and apparatus for ciphering and deciphering messages Method and apparatus for achieving secure password verification System and process for identification of persons requesting access to particular facilities Electronic locking device having key and lock parts interacting via electrical pulses Solid state key for controlling access to computer software Solid state key for controlling access to computer software Method and apparatus for positively identifying an individual Field initialized authentication system for protective security of electronic information networks Solid state key for controlling access to computer systems and to computer software and/or for secure communications InventorsAssigneeApplicationNo. 981808 filed on 11/25/1992US Classes:340/5.26, Code rotating or scrambling235/382, Permitting access705/72, Verifying PIN713/184PIN/password generator deviceExaminersPrimary: Yusko, Donald J.Assistant: Zimmerman, Brian Attorney, Agent or FirmInternational ClassH04Q 001/00AbstractA method and apparatus are provided for verifying the identity of a system user. Each user has a token which processes an inputted seed to generate a stored value which is either a current seed value or a function thereof. This value is then changed to generate a new current seed in response to each of a plurality of selectively generated trigger signals. The stored current seed or a selected function thereof is outputted, for example by being displayed on the token, and is received and inputted into a host verification unit. This unit either has or generates the current seed value (and the outputted function thereof where required) for the user, the user being indicated by an input also provided to the host with the token output, and compares the received and generated seed function values to verify the user.Other References
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