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
33. History of Fingerprints Fingerprints replaced the Bertillon system Will West and William West had different fingerprints .
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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
44. What is AFIS ? A utomated F ingerprint I dentification S ystem
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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?
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.