fingerprints

where were fingerprints used on clay tables

Ancient Mesopotamia 2000 BCE

when were finger prints first used on legal documents

China 600 BCE

what type of evidence are fingerprints

Circumstantial amd physical

In india 1893 what did they start

collecting fingerprints fro identification, legal documents and fraud

who and where was the first fingerprint classification system used

argentina 1891 and juan jucetich

Where were fingerprints systems categories to compare

england 1893

New york was the first what

police department to use fingerprints

What is a finger print

impression left on surface from pattern of ridges

What are friction ridges

fingers, toes , feet and plams covered in dermal

rides leave marks made of what

water and oil

Fingerprints form….

in the 10th week of fetal

Fingerprints develop in what layer of skin

basul layer of skin

why are fingerprint permanent

epidermal protect it

plain arch

ridges enter one side of the, rise in center and exit out other

tented arch

Ridge enters one side, rises in center ( sharp rise)

Loops

enter and exit from same direction

where is the core at in loop

center

Radical loop

Opens toward thumb

Ulnar loop

Opens toward little finger

Whorl

Ridges that make complete spiral

how many deltas do whorls have

2

central pocket loop whorl

complete circle , 2 deltas and one crosses line

Double loop whorl

2 seprate loops form and 2 deltas

delta

triangle region near loop

ridge count

number or ridges from core to delta

visible prints

fingers touch surface after ridges contact colored material

Plastic print

ridges left on loft material

latent prints

invisible prints left on clear oils

Fingerprint powders

cling to moisture in fingerprint

What color fingerprint powder is best

grey or black

Its important for investigators to not destroy prints when what

dusting

Iodine uses what

paper and cardboard

Iodine fuming is applied in what

vapor tent

Ninhydrin uses what

paper

Ninhydrin is applyed to or in what

object dipped or sprayed with it

super glue vapor uses what

household items

Superglue Vapor apply in what

Heated in vapor tent

AFIS

automatic fingerprint identification system

what does AFIS do

scan codes