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Biometric system and techniques suitable therefor

  • US 6,311,272 B1
  • Filed: 11/17/1998
  • Issued: 10/30/2001
  • Est. Priority Date: 11/17/1997
  • Status: Expired due to Fees
First Claim
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1. A biometric method eliciting a migrating biometric characteristic from individuals, the method comprising:

  • storing at least first and second templates of at least one migrating biometric characteristic for each of a population of individuals, said first template being a reference sample of an individual'"'"'s biometric characteristic and said second template being initially derived from said first template; and

    comparing an individual'"'"'s first and second templates to a fresh sample provided by the individual and, if the fresh sample is found to sufficiently resemble the first and second templates, modifying the second template to take into account differences between the reference sample and the fresh sample.

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