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Introduction to Biometrics



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Introduction to Biometrics Dr Bhavani Thuraisingham The University of Texas at Dallas Lecture 15 Biometrics Applications II October 19 2005 Outline Overview Citizen Facing Applications Employee Facing Applications References Course Text Book Chapter 11 Chapter 12 Groups of Applications Citizen Facing Applications E g Criminal identification Employee Facing Applications PC Network access Physical access Customer facing applications POS Transactions Citizen Facing Applications A Government body state federal agency provides authentication an enforces compliances with the system s match decisions Examples law enforcement benefits disbursement obtaining drivers license Large scale systems enrolling thousand of people Three aspects Criminal identification Citizen identification Surveillance Criminal Identification Use of biometrics technologies to identify or verify the identity of a suspect detainee Law enforcement applications Current Trends and Directions Current Trends Automated fingerprint searches against local state and national databases Automated processing of mug shots Directions Internet based fingerprint and image databases DNA based solutions DNA Biometrics Proving that a suspect s DNA matches a sample left at the scene of a crime requires two things Creating a DNA profile using basic molecular biology protocols Crunching numbers and applying the principles of population genetics to prove a match mathematically Humans have 23 pairs of chromosomes containing the DNA blueprint that encodes all the materials needed to make up your body as well as the instructions for how to run it One member of each chromosomal pair comes from your mother and the other is contributed by your father Every cell in your body contains a copy of this DNA While the majority of DNA doesn t differ from human to human some 3 million base pairs of DNA about 0 10 percent of your entire genome vary from person to person The key to DNA evidence lies in comparing the DNA left at the scene of



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