finger printing
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Finger Printing](https://reader035.vdocuments.site/reader035/viewer/2022062500/568150a8550346895dbeb544/html5/thumbnails/1.jpg)
Finger Printing
![Page 2: Finger Printing](https://reader035.vdocuments.site/reader035/viewer/2022062500/568150a8550346895dbeb544/html5/thumbnails/2.jpg)
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.
![Page 3: Finger Printing](https://reader035.vdocuments.site/reader035/viewer/2022062500/568150a8550346895dbeb544/html5/thumbnails/3.jpg)
How they can be left behind.
• Direct- creates an impression• Latent- dirt, sweat, other residue pressed into
an object.
![Page 4: Finger Printing](https://reader035.vdocuments.site/reader035/viewer/2022062500/568150a8550346895dbeb544/html5/thumbnails/4.jpg)
3 Basic Patterns of Finger Prints
• 1. Arch• 2. Whorl• 3. Loop
![Page 5: Finger Printing](https://reader035.vdocuments.site/reader035/viewer/2022062500/568150a8550346895dbeb544/html5/thumbnails/5.jpg)
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.
![Page 6: Finger Printing](https://reader035.vdocuments.site/reader035/viewer/2022062500/568150a8550346895dbeb544/html5/thumbnails/6.jpg)
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.
![Page 7: Finger Printing](https://reader035.vdocuments.site/reader035/viewer/2022062500/568150a8550346895dbeb544/html5/thumbnails/7.jpg)
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.
![Page 8: Finger Printing](https://reader035.vdocuments.site/reader035/viewer/2022062500/568150a8550346895dbeb544/html5/thumbnails/8.jpg)
What is AFIS?
• AFIS (Automated Fingerprint Identification System)- open 24/7 to help police and give them quick results.