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Fingerprints basics for scouts
- 1. Basic Fingerprint Infromation by Captain Russ Lescault August 2009
- 18. Fingerprint Identification Basics Pattern types: there are three basic fingerprint pattern types, whorl (to the left), arch and loop. Whorl : swirling pattern
- 19. Loop Pattern has a right or left slant (leans) Fingerprint Identification Basics
- 20. Arch Looks like a ‘hill’ Fingerprint Identification Basics
- 25. History of Fingerprints Henry Faulds (1843-1930)
- 29. History of Fingerprints Used from 1882 to 1903
- 33. History of Fingerprints Fingerprints replaced the Bertillon system Will West and William West had different fingerprints .
- 40. Galton or identification points are readily definable areas where the ridge “or lines” intersect or stop What makes a Fingerprint Comparable ?
- 41. Galton or identification points are readily definable areas where the ridge “or lines” intersect or stop What makes a Fingerprint Comparable ? Galton or identification points are readily definable areas where the ridge “or lines” intersect or stop
- 42. A comparable fingerprint has to have at identification points . What makes a Fingerprint Comparable ? This includes fingerprints, palm prints and partial fingerprints Palm Partial Latent Fingerprint
- 43. Suspect’s fingerprint when he was arrested Fingerprint found at the crime scene They match!
- 44. What is AFIS ? A utomated F ingerprint I dentification S ystem
- 46. Examiner Enters Latent into AFIS 1) makes the decision if a latent is of AFIS Quality (a) 8 to 12 points (b) identifiable core or delta 2) If the system does not have a direct scan feature, they scan the print 5times it’s normal size 3) traces the print What happens now?
- 47. Examiner Enters Latent into AFIS Examiner : 1) makes the decision if a latent is of AFIS Quality (a) 8 to 12 points (b) identifiable core or delta 2) If system does not have a direct scan featurem then they scans the print 5 times it’s normal size 3) traces the print 4) enters the scan or tracing into AFIS computer Examiner Enters Latent into AFIS
- 48. The AFIS computer automatically identifies the Galton points and maps them into the computer, which is verified by the Examiner Then what happens?
- 50. Questions?
Notas del editor
- Example of a 25 year old white male with red hair wearing red shirt and blue jeans robs a 7-Eleven store with a Smith and Wesson model 64 .38 caliber revolver. During the robbery the robber fires off a shot into the ceiling to influence the store clerk. Twenty minutes after the robbery a w/m with red hair, wearing a red shirt and blue jeans is found five blocks away, carrying a Smith & Wesson model 64 .38 caliber revolver and a 7-Eleven bag filled with US currency. All the information involving this red-headed white male is circumstanial evidence , whereas the match of the bullet in the ceiling of the 7-Eleven store to the revovler he was carrying is Direct evidence.