fingerprint patterns
DESCRIPTION
This is a slideshow for basic fingerprint pattern recognitionTRANSCRIPT
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Fingerprint Patterns
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Fingerprint typesWhile fingerprints are unique to each individual,
there are three general categories that fingerprints can be placed into.Loop: 60-65% of the populationWhorl: 30-35% of the populationArch: up to 5% of the population
All categories are determined by the number of deltas found within the pattern.
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About the patternsAny fingerprint pattern which contains 2 or more
delta's will be a whorl pattern.
If a print contains no delta's then it is an arch pattern.
If it contains one (and only one) delta it will be a loop pattern.
Later you will learn that the names are not as strait forward as the rules suggest
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General Loop PatternRight Loop starts from the rightLeft Loop starts from the Left
Just One Delta
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General Whorl Pattern
Whorls will always have at least 2 valid Deltas located within the print
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General Arch Pattern
Arch patterns will have no Deltas
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Composite PatternsWithin the general categories, there are several
different types of each print based on some major or minor differences
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Tented Arch patterns are steeper than general arch
patterns
General Arch Tented Arch
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Double Loop Patterns look very different from left or right
loops and have 2 deltas
Technically this is a double loop whorl
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Central Loops/Pocket Loops look similar to whorl patterns but
obviously have a loop from the left or right
Right Pocket Loop Left Pocket Loop
These are technically Left or Right Central Pocket Loop Whorls
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Accidental patterns look like an Arch pattern and a loop pattern mixed together. It is also known as a mixed figure
If a pattern does contain more than 2 delta's it will always be an accidental whorl pattern.
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AssignmentGet a piece of white paper and put all the prints
from each hand on the paper.
Above each print you need to label the type of print that each finger is.
For your right hand, find and label three points (fork, delta, etc.) within each fingerprint