Forensics- Chapt. 6 fingerprints

Arch

a fingerprint pattern in which the ridge originates from one side of the print and continues to the other side

Biometrics

uses measurements and statistical analyses of someone’s physical characters to aid in their identification

Core

a center of a loop

Delta

a triangular ridge pattern created when ridge patterns diverge

fingerprint

An impression left on any surface that consists of patterns made by the ridges on a finger

Integrated Automated Fingerprint Identification System (IAFIS)

FBI developed national database of more than 76 million criminal fingerprints and criminal histories

Latent Fingerprint

a concealed fingerprint that is made visible through the use of powders or forensic techniques

Loop

a fingerprint pattern in which the ridge pattern flows inward and returns in the direction of the origin

Minutiae

the combination of details in the shapes and positions of ridges in fingerprints that make each unique

Patent fingerprint

a visible fingerprint produced when fingers are coated with blood, ink, or some other substance touch a surface and transfer their print to that surface

Plastic fingerprint

a three-dimensional fingerprint made in soft material such as clay, soap, or putty

Ridge count

the number of ridges between the center of a delta and the core of a loop

Ridge pattern

the recognizable pattern of the ridges found in the end pads of fingers that form lines on the surfaces of objects in a fingerprint

Ten print card

a form used to record and preserve a person’s fingerprints

Whorl

a fingerprint pattern that resembles a bull’s-eye