Fingerprints patterns are of three types: arches, loops and whorls, and loops are the most common pattern, being found in 65 to 70 percent of all fingerprints. In this pattern, ridges or curved lines enter from one side ... More »

Fingerprint scanners capture digital images of fingerprints and compare them to other fingerprint images on file. There are two main types of fingerprint scanners: optical scanners and capacitive scanners. More »

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According to the U.S. Marshals Service, one of the earliest uses of fingerprinting for purposes of identification dates to ancient Babylon, about 4,300 years ago, when merchants used fingerprints on clay tablets to final... More »

No scientific methods can determine the length of time for which a fingerprint lasts on an object. There are many factors that determine how long a fingerprint lasts on any surface or object, with environmental condition... More »

Creating your own DNA fingerprint helps you to learn about DNA. This process takes about an hour to put together and overnight to set. You need a DNA sample, beakers, a laboratory, restriction enzymes, a gel tray, an ele... More »

Each human has a unique set of fingerprints, and every person will have the same unique prints for their entire lives. The length of time a print lasts on a specific object depends on the object's surface characteristics... More »

Blood spatter analysis is a forensic science involving the study of bloodstain patterns that criminologists use to reconstruct the events of a suspected crime. Analysts examine subtle factors such as the placement, shape... More »