Chapter 4
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Chapter 4 Fingerprints
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Chapter 4. Fingerprints. Fingerprints and identity: a brief history. Fingerprints have imparted a sense of identity for hundreds of years. Fingerprints as evidence of identity. Fingerprints are unique Fingerprints don’t change over your lifetime - PowerPoint PPT Presentation
Transcript of Chapter 4
Chapter 4Fingerprints
Fingerprints and identity: a brief history
Fingerprints have imparted a sense of identity for hundreds of years.
Fingerprints as evidence of identity
Fingerprints are uniqueFingerprints don’t change over your
lifetimeFingerprints have sufficient detail to allow
them to be classified systematically
Fingerprint classificationLoop The loop pattern is the most common in fingerprints.
60%-65%
Whorl
Found in about 30% of fingerprint patterns, the whorl is a rounded or circularly shaped pattern containing two or more deltas.
Arch
The arch pattern has no delta or core and occurs only in about 5% of fingerprint patterns.
Methods of detecting fingerprints
Lights
Dusting
Developers and stains
