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A.F.I.S. Automated Fingerprint Identification System

A.F.I.S. Automated Fingerprint Identification System

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A.F.I.S. Automated Fingerprint Identification System

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  1. A.F.I.S.Automated Fingerprint Identification System Glenn Langenburg Forensic Scientist Latent Print Examiner Minnesota Bureau of Criminal Apprehension

  2. Real Life v. Fantasy

  3. Classification • Loops ~ 60% • Whorls ~ 35% • Arches ~ 05%

  4. A.F.I.S. • Automated Fingerprint Identification System

  5. A.F.I.S. • Automated Fingerprint Identification System 0101010010101010101010010101011011101010101010101010101010101011100010111111010101010101010101010001001001010100101010111010101001011011111101010101010101010101010101010001001010010000010101010001101110101101010101101010101010101010101010010010010010100101010100101010101010010101010101001010101001010100101111010101000100100100100101001010010001010100010100101010101010010110101010101010100001010101010010100101010010000100010111010010101000010100001000010111101001001010010010011110001010101010100010001111010010101010101001000010111000101001001000101010101010101001010101010101010010101010101010101010111101010101 • Searches via a mathematical algorithm

  6. Latent Entry

  7. M.A.F.I.N. • Midwest Automated Fingerprint Identification Network • Minnesota, North Dakota, South Dakota • Criminal histories only!

  8. General Functions • Criminal history check • 10 print card • Civil background check • 10 print card • Latent fingerprint search • Small distorted portion vs. 10 print card

  9. I.A.F.I.S. • Integrated AFIS system • Request to build in 1991 • Approx. 40 million FP cards • Online August 1999 • 35 States online as of Jan. 2002 • Turn-around time: • 2 hours for 10-print cards • 24 hours for latent print searches

  10. Some Stats • 1.3 million submissions/month • 49% criminal • 51% civil • 90,000 fugitives ident./month

  11. Case Study: Who Killed Barry Bridge? • On July 9, 2002: • Morrison Co. S.O. • Fellow employee not breathing • Little Falls, MN • EMS arrives and reports: • Barry Bridge is deceased

  12. Morrison County

  13. Scene • Morrison County Deputies arrived • No sign of struggle • Decedent drank a lot, drugs? • Last seen leaving bar • Body to Ramsey Co ME

  14. BCA Gets Involved • Thought to have record with Henn. Co. • Get thumbprints from Bridge (7/11) • Ran in M.A.F.I.N. • No hit • Teletype sent to AR, TX • Iona Bridge, mother, contacted (7/15) • ??? • Barry Bridge in Pennsylvania

  15. Who’s the Dead Guy? • ME report: • Subgaleal and subdural hemorrhage • Focal contusions on extremities and left lateral thoracic wall region • Hemorrhage to left dorsal thoracic wall • Healing fractures to right dorsal thoracic wall • Micronodular cirrhosis of liver • BAC = 0.198, no presence of drugs

  16. …in English… • Stumblin’ drunk • Closed head trauma • Accidental death • But who is he?

  17. I.A.F.I.S. • 7/23 Prints run through I.A.F.I.S. • 7/24 Response

  18. 1 2 3 4 5,6 7 1 2 3 4 5,6 7

  19. Decedent Identified • Randall Rhodes (“Randy”) • From Little Rock, AR • FP in AR and TX • Contacted Glenda Foster, Benton, AR • Filled in the details • Morrison Co. county burial plot • Who killed Barry Bridge?

  20. Reality TV?

  21. Sources Used Ashbaugh, David R. Quantitative-Qualitative Friction Ridge Analysis, 1999. Lee, Henry C. Advances in Fingerprint Technology, 1991. U.S. Dept. of Justice, FBI. Thanks to: Morrison County Sheriff’s Office, Sheriff Tschida Ramsey County Medical Examiner’s Office, Dr. M. McGee Sol Agramont, Nogales, AZ Email: Glenn.Langenburg@state.mn.us