CI 5: Demonstrate methods of fingerprint development. EQ: What are the patterns and characteristics of fingerprints?

Fingerprint An imprint made by ridge patterns on the tip of a finger.

dactyloscopy The study of fingerprints

anthropometry The study of human body measurements

Loop Fingerprint pattern with one or more ridges entering from the side, curving, then going out on the same side entered

Delta Triangular area found in all loop and whorl patterns

Core Area found near the center of all loop and whorl patterns

whorl Fingerprint pattern with at least 2 deltas and a core

arch Least common and simplest fingerprint pattern. Arches have no delta or core. All ridges enter one side and exit the other.

Minutiae Ridge characteristics used to describe fingerprints

Plastic print 3 D print made as indentation in soft material such as fresh paint, putty or wax. Also called an indented or molded print

Visible print Fingerprint left by a finger that has touched blood, paint, ink, or the like.

Latent print Fingerprint made by the deposit of perspiration or body oils Invisible to the naked eye until developed

bifurcations Common minutiae, shaped like a 2-pronged fork.