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Fingerprints

Learn about the principles of fingerprints, the three main types of prints (loops, whorls, arches), and how these unique ridge patterns are used for systematic classification. Understand the individuality and permanence of fingerprints.

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Fingerprints

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  1. Fingerprints bsapp.com

  2. bsapp.com

  3. Principles of Fingerprints First Principle: A fingerprint is an individual characteristic; no two fingers have yet been found to posses identical ridge characteristics. bsapp.com

  4. Principles of Fingerprints Second Principle: A fingerprint will remain unchanged during an individual's lifetime. bsapp.com

  5. John Dillinger bsapp.com

  6. Principles of Fingerprints Third Principle: Fingerprints have general ridge patterns that permit them to be systematically classified. bsapp.com

  7. Three Main Types of Prints • Loops • Whorls • Arches bsapp.com

  8. Deltas & Cores bsapp.com

  9. Loops • A loop must have one or more ridges that enter from one side of the print, re-curve, and exit from the same side • One Delta & One Core bsapp.com

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  12. Whorls • One or more cores • At least two deltas bsapp.com bsapp.com

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  16. Arches • An arch is formed by ridges entering from one side of the print, rising slightly and exiting on the opposite side. • No Deltas & No Cores bsapp.com

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