Fingerprint Analysis: Types, Features, and Identification Techniques
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34 Terms
what is the study of fingerprints called?
dactyloscopy
which animal has similar fingerprints to humans?
chimpanzee
what percentage of people have loops?
60%
what is a patent fingerprint?
visible print
what is the most common type of fingerprint?
loops
what do friction ridges help us do?
grip objects
what is the role of the basal layer in fingerprints?
forms ridges
how are latent fingerprints made visible?
using chemicals
what is the main component of eccrine secretions?
water
What is the purpose of AFIS?
store fingerprints
what is a plastic fingerprint?
indentation print
what is ridgeology?
study of fingerprints
what is the first step in lifting fingerprints?
put on gloves
what is the main use of biometrics?
identification
what is the role of minutiae in fingerprints?
identify prints
what is the most common method to reveal latent prints?
using powders
what is a core in fingerprint analysis?
center of whorl
what is the purpose of ninhydrin?
reveal prints
what is the main component of sebaceous secretions?
fatty substances
what is the role of the dermal papillae?
form ridges
What is the main function of the Automated Fingerprint Identification System?
store fingerprints
what is a latent fingerprint?
invisible print
what is the main use of fingerprint brushes?
reveal prints
What is the role of the FBI's IAFIS?
national database
what is the main characteristic of whorls?
two deltas
what is the main purpose of ridge count?
distinguish prints
what is the main characteristic of arches?
simple pattern
what is the main function of the core in fingerprints?
center of pattern
what is the main purpose of using fluorescent powder?
reveal prints
what is the main characteristic of a double loop whorl?
two loops
what is the main purpose of using magnetic powder?
reveal prints
what is the main purpose of using cyanoacrylate fuming?
develop prints
what is the main function of the delta in fingerprints?
identify patterns
what is the main purpose of using lifting tape?
collect prints