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Chapter 4

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

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Chapter 4

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  1. Chapter 4 Fingerprints

  2. Fingerprints and identity: a brief history • Fingerprints have imparted a sense of identity for hundreds of years.

  3. Fingerprints as evidence of identity • Fingerprints are unique • Fingerprints don’t change over your lifetime • Fingerprints have sufficient detail to allow them to be classified systematically

  4. Fingerprint classification Loop The loop pattern is the most common in fingerprints. 60%-65%

  5. Whorl • Found in about 30% of fingerprint patterns, the whorl is a rounded or circularly shaped pattern containing two or more deltas.

  6. Arch • The arch pattern has no delta or core and occurs only in about 5% of fingerprint patterns.

  7. Methods of detecting fingerprints • Lights • Dusting • Developers and stains

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