Fingerprints bsapp.com
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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
Principles of Fingerprints Second Principle: A fingerprint will remain unchanged during an individual's lifetime. bsapp.com
John Dillinger bsapp.com
Principles of Fingerprints Third Principle: Fingerprints have general ridge patterns that permit them to be systematically classified. bsapp.com
Three Main Types of Prints Loops Whorls Arches bsapp.com
Deltas & Cores bsapp.com
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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Whorls One or more cores At least two deltas bsapp.com bsapp.com
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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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