×

Method and apparatus for secure identification and verification

  • US 5,097,505 A
  • Filed: 10/19/1990
  • Issued: 03/17/1992
  • Est. Priority Date: 10/31/1989
  • Status: Expired due to Term
First Claim
Patent Images

1. A personal identification system comprising:

  • a unit to be carried by a person to be identified, said unit containing, means for storing a predetermined coded value, means for changing at least a predetermined portion of the coded value at predetermined time intervals in accordance with a predetermined algorithm, the algorithm being such tat the value of said predetermined portion of the stored coded value at any given time is nonpredictable, means for producing a triggering signal, and means responsive to said triggering signal for causing an indication of the current stored coded value to be automatically produced in a predetermined sequence; and

    a station having means automatically responsive to the produced coded value sequence for identifying the person who is to be carrying the unit.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×