Finger printing is a technique used to obtain a quick and authentic print of an individual’s finger from a piece of dry skin. Fingerprints left by the action of finger movement are generally more legible and more authentic than those that result from the deposition of finger fat or any other substance on the skin visit this website. Fingerprinting, also referred to as Tenonometry, is a technique used in forensics for the measurement and authentication of human fingerprints found on crime scenes. A fingerprint is simply an impression left on a surface by the friction between finger ridges. The recovery of complete fingerprint from a crime scene, even from very small amounts of material such as soap smudges or finger print fragments, is a benchmark of modern forensic science.
What is Finger Printing?
Fingerprinting on contaminated surfaces can be challenging for police departments and forensic personnel. For instance, if a criminal were to smear a murder weapon (or perhaps make one) on a towel or bathroom towel, it could easily leave an everlasting impression of the Crime Scene investigator. Likewise, if a criminal were to use his fingernail to remove ink from the paper, it would leave a fingerprint behind. However, it is possible to reduce the “accuracy” of this method by using specialized devices that can print a finger print from any type of finger print surface. This type of device has become available on the market and is commonly used by Crime Scene technicians.
The method of finger printing is most effective when it is performed on an oily surface. There are many Crime Scene technicians that use this method, because the prints made from an oil-based product are more legible and authentic than those that are made from a dry, finger-print-free surface. Unfortunately, finger printing is not 100% accurate. Only about one-third of all impressions leave a detectable print on the tracing paper. There are many other methods available to increase the accuracy of fingerprint evidence, but most of them do not have the same level of permanence as the finger prints.