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Finger Printing

Finger Printing. What is f inger printing?. A finger print is a mark left behind after the ridges on the fingers, hands, toes or feet touch an object. How they can be left behind. Direct- creates an impression Latent- dirt, sweat, other residue pressed into an object.

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Finger Printing

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  1. Finger Printing

  2. What is finger printing? • A finger print is a mark left behind after the ridges on the fingers, hands, toes or feet touch an object.

  3. How they can be left behind. • Direct- creates an impression • Latent- dirt, sweat, other residue pressed into an object.

  4. 3 Basic Patterns of Finger Prints • 1. Arch • 2. Whorl • 3. Loop

  5. Why it is important in a crime scene. • If finger prints are found at the scene of a crime, they can be linked back to that certain person which will link them to that crime scene.

  6. 3 Techniques used in analyzing Fingerprints. • 1. Traditional- on paper imprinting. (ink) • 2. Digital- touch pad. • 3. Lifting- oil from hands left behind, captured by powder placed on dark-light, light=-dark surfaces.

  7. How technology has helped. • Fingerprints are now stored in a data base on computers. If a finger print is ran through the computer it can be found much faster than the traditional way of finding them.

  8. What is AFIS? • AFIS (Automated Fingerprint Identification System)- open 24/7 to help police and give them quick results.

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