Reading Reading FingerprintsFingerprints

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Reading PrintsReading Prints The key to reading prints is not to find each The key to reading prints is not to find each

and every characteristic in the prints, but to and every characteristic in the prints, but to get the trend of patterns. get the trend of patterns.

Most prints found at a crime scene are partial Most prints found at a crime scene are partial prints which rarely contain all deltas and prints which rarely contain all deltas and cores. cores.

We must learn how to look at the trend of the We must learn how to look at the trend of the lines as a whole, rather than individual lines. lines as a whole, rather than individual lines.

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Double LoopsDouble Loops

Contain an “S” Contain an “S” shape within shape within

the print the print

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Plain Whorls & Central Plain Whorls & Central Pocket LoopsPocket Loops

These are the only prints that These are the only prints that contain a circle or spiral within the contain a circle or spiral within the printprintPlain

Whorl

CP Loop

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Plain Whorl

Central Pocket

Loop

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Plain Whorl or Plain Whorl or Central Pocket Central Pocket LoopLoop

A Plain Whorl A Plain Whorl has symmetry-has symmetry-core in the core in the center, deltas center, deltas near the near the bottom of the bottom of the printprint

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Plain Whorl or Plain Whorl or Central Pocket Central Pocket LoopLoop One of the One of the

deltas on a deltas on a CPL will be CPL will be twisted and twisted and closer to the closer to the

core (no core (no symmetry)symmetry)

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LoopsLoops

These prints have some lines These prints have some lines that enter at one side, turn, that enter at one side, turn, and then exit the same sideand then exit the same side

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Ulnar Loop

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Radial Loop

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ArchesArches

All lines All lines enter at one enter at one side of the side of the print and print and exit the exit the other other bsapp.combsapp.com

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