Identification

·         Dactylography: Fingerprint system, Galton system, Dermatoglyphycs)

• Most reliable* method of identification of a person.

First Finger Print Bureau* was established at Writer’s Building, Calcutta* ,India

• Fingerprints are impressions of pattern formed by the papillary ridges of the fingertips.

• Fingerprints are classified primarily as

1. Loops 67%(most common*)

2. Arches

3. Whorls

4. Composite forms–1-2% (least common*)

• Minimum no. of points to estd proof of identity is 8* (Supreme Court ruling*)

• The patterns are not inherited.

• The pattern is different even in identical twins. (Adolphe Quetelet’s Rule* of biological variation*)

Categories of Finger Prints

Latent Finger PrintsàBarely visible

Plastic Finger PrintsàPrints made on soft surface(Soap, cheese etc)

Visible Finger Printsà Stained with blood, greese etc

• In leprosy and Charring fingerprints may be lost