History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient...
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Transcript of History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient...
![Page 1: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/1.jpg)
![Page 2: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/2.jpg)
History
• The first fingerprints used for markings date back to Babylon between 1792-1750 BC.
• Ancient Chinese documents were sealed with inked fingerprints.
• Earliest western study of fingerprints began in 1684 when Dr.Nehamiah described patterns found on human fingertips.
![Page 3: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/3.jpg)
Fingerprint Formation
• Fingerprints begin to form during the 10th week of pregnancy.
• The print itself is a result of grooves and ridges formed by the production of new skin cells in the basal layer of the skin.
• The prints left behind are the result of oils secreted by the skin to aid gripping objects.
![Page 4: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/4.jpg)
Characteristics
• There are 3 general visual patterns:– Loops– Whorls– Arches
![Page 5: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/5.jpg)
Examination
• Three things the forensic examiner looks for are:– Core: the center of a
loop or whorl.– Delta: The triangular
region located near a loop.
– Minutia: The unique ridge patterns in the fingerprint.
![Page 6: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/6.jpg)
Types of Fingerprints
• Patent: Easily visible on a smooth surface. (Usually when a liquid comes in contact with the hands.)
• Plastic: Indentations left in clay, putty or wax.
• Latent: Hidden prints that can only be seen when involved with a chemical reaction or powder.
![Page 7: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/7.jpg)
Latent Fingerprints
There are 5 main methods for visualizing latent prints:
Carbon Powder: this is the most common method. Known as “dusting for prints,” using a fine carbon powder.
Ninhydrin: Object is dipped into the solution and dries 24hrs for a purple-blue print.
![Page 8: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/8.jpg)
Latent Fingerprints
Cyanoacrylate Vapor: “Super glue” is heated and the vapor attached to the oils from the print creating a white print.
Silver Nitrate: Object is dipped or sprayed with solution creating a black-red print under UV light.
Iodine Fuming: Solid crystals are heated in a tent to reveal a quickly fading brown print.
![Page 9: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/9.jpg)
FAQ’s
Q. Can fingerprints be altered or disguised? A. Yes, but only for a short period of time. (ex.
Pineapple workers and Dillinger.)
![Page 10: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/10.jpg)
FAQ’s
Q. How reliable is fingerprint identification?A. Ideally, it is flawless, however, whenever a
human is involved, some measure of error may be present.
![Page 11: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/11.jpg)
FAQ’s
Q. How are fingerprints analyzed?A. IAFIS, Integrated Automated Fingerprint
Identification System. It contains the fingerprints and criminal histories of 47 million individuals.
![Page 12: History The first fingerprints used for markings date back to Babylon between 1792-1750 BC. Ancient Chinese documents were sealed with inked fingerprints.](https://reader036.fdocuments.net/reader036/viewer/2022072006/56649d195503460f949eebb8/html5/thumbnails/12.jpg)