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Dactylography: Fingerprint
system, Galton system, Dermatoglyphycs)
• In leprosy and
Charring fingerprints may be lost
• 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
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