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Fingerprints The First ID

www.criminallawcourt.com


Fingerprints are the oldest and most accurate method of identifying individuals. No two people (not even identical twins) have the same fingerprints, and it is extremely easy for even the most accomplished criminals to leave incriminating fingerprints at the scene of a crime.


Each fingerprint has a unique set of ridges and points that can be seen and identified by trained experts. If two fingerprints are compared and one has a point not seen on the other, those fingerprints are considered different. If there are only matching points and no differences, the fingerprints can be deemed identical. (There is no set number of points required, but the more points, the stronger the identification. Fingerprints can be visible or latent; latent fingerprints can often be seen with special ultraviolet lights, although on some surfaces a simple flashlight will identify the print. Experts use fingerprint powder or chemicals to set a print; they then "lift" the print using special adhesives.


The first murder case in the United States in which fingerprint evidence was used successfully was in Illinois in 1910, when Thomas Jennings was accused of murdering Clarence Hiller after his fingerprints were found at Hiller's house. Jennings appealed his conviction, but the Supreme Court of Illinois upheld the evidence in 1911 and Jennings was executed in February 1912. People v. Jennings thus established fingerprint evidence as a reliable standard.


The Federal Bureau of Investigation (FBI) established a fingerprint repository through its Identification Division beginning in 1924. This repository held fingerprint cards in a central location. Over the next 50 years the FBI processed more than 200 million fingerprint cards. To eliminate duplicate fingerprints and make it easier to store and share fingerprints among law enforcement agencies, the FBI developed the Automated Fingerprint Identification System (AFIS) in 1991, which computerized the card system. The Integrated AFIS system (IAFIS) was introduced in 1999; a law enforcement official can request a set of criminal prints from IAFIS and get a response within two hours.


Fingerprints are kept for criminals, but civil fingerprints are also kept. People who apply for government jobs, jobs that handle confidential information, banking jobs, teaching jobs, law enforcement jobs, and any job that involves security issues can be fingerprinted. IAFIS stores civil prints as well as criminal prints.

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