Fingerprint types• While fingerprints are unique to each individual, there are three general categories that fingerprints can be placed into. – Loop: 60-65% of the population – Whorl: 30-35% of the population – Arch: up to 5% of the population
About the patterns• Any fingerprint pattern which contains 2 or more deltas will be a whorl pattern.• If a pattern contains no deltas then it is an arch.• If it contains one (and only one) delta it will be a loop.• If it contains 2 or more it will always be a whorl.
General Loop PatternLeft Loop starts Right Loop starts from the Left from the right
General Whorl Pattern Whorls will always have at least 2 valid Deltas located within the print
General Arch PatternArch patterns willhave no Deltas
Composite Patterns• Within the general categories, there are several different types of each print based on some major or minor differences
Tented Arch patterns are steeper than general arch patterns
Double Loop Patterns look verydifferent from left or right loops
Central Loops/Pocket Loops look similar to whorl patterns butobviously have a loop from the left or right Right Pocket Loop Left Pocket Loop
Accidental looks like an Arch pattern and a loop pattern mixed together. It is also known as a mixed figureIf a pattern doescontain more than 2deltas it will always bean accidental whorl.