Detecting and Lifting Prints

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Presentation transcript:

Detecting and Lifting Prints bsapp.com

Types of Fingerprints

Fingerprints Visible prints are made after coming in contact with colored material such as blood, paint, grease, or ink. Plastic prints are ridge impressions left on a soft material such as putty, wax, soap, or dust. bsapp.com

Fingerprints Latent prints (invisible prints) are impressions caused by the transfer of body perspiration or oils present on the finger to the surface of an object. Latent prints must be developed or made visible bsapp.com

bsapp.com bsapp.com

Locating Fingerprints

Visible Prints Visible prints are usually very easy to find because they are distinct and can be viewed with the naked eye.

Latent Prints Latent prints can be located using a device called the Reflected Ultraviolet Imaging System (RUVIS) Shines ultraviolet light on a surface and when it hits the oil and sweat of a print, it will be reflected back to the device where it will be converted into visible light making it obvious to the naked eye. Once found, it’s time to be developed!

Brain Break: Gotchya!