Fingerprints Quiz

Herchel

Indians that put their fingerprints on contracts means of identifying prisoners

Faulds

Fingerprints don't change over time

Bertillion

Body measurements (anthropometry)

Galton

Daddy of loops, arches, and whorls

Henry

Numerical Classification System

Vuchetich

Fingerprints classification in Spanish speaking countries

AFIS (Automated Fingerprint Identification System)

computer system to store info on computers

IAFIS (Integrated Automated Fingerprint Identification System)

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

Formation of Fingerprints

- Formed beginning that the 10th week of gestation

- Developed basal layer of skin

- Protected by the outer layer of epidermis

Fundamental Principals of Fingerprints

- individual characters, fingerprints remain unchanged

- general characteristics of ridge patterns that permit them to be systematically classified

What is the issue of the AFIS

Person's fingerprints may be in one AFIS but not in the others

What are three major prints

Loop, Whorl, Arch

Arch

Enters one side and fling and cross to the other side while rising upward in the middle.e The don't have the lines, delta, or cores.

What are the types of Arches

Plain, tinted

Loop

Must have one or more ridges entering and exiting from the same side; have one delta

Two types of Loops

radial and ulnar

Where does the radical open toward

The thumb

Where does the ulnar open toward

The pinky

Whorl

Plain/central pocket at least one ridge that makes a complete circuit

Double loop

Made out of 2 loops

Accidental pattern

Not covered by other categories

Ridge Ending

Where the lines in the fingerprint pattern end or stop.- Two lanes -> One lane

Island/ Short ridge

small line within two lines

Bifurcation/ fork

The point at which one ridge divides into two ridges- like a wish bone

spur fingerprint

Doesn't connect

double bifurcation

Occurs when a ridge splits or forks into two separate ridges and the splits again into two separate rides

Triple bifurcation

happens three times rather than one or two

Bridge

Connects the two lanes

4 types of Whorls

Plain, central pocket, double loop, accidental

Delta FIngerprint

a triangular ridge pattern with ridges that go in different directions above and below a triangle