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Fingerprinting to Solve Crimes
Transcript of Fingerprinting to Solve Crimes
Plastic Different Types of Fingerprints Whorl Collecting Evidence Gathering Latent Fingerprints at a Crime Scene 1. Dust Crime Scene with powder (this special powder sticks to the prints and makes them visible) How Fingerprints are Used to Prosecute Suspects Crime Cases Involving Fingerprint Evidence <http://abcnews.go.com/TheLaw/atlanta-twin-murder-case-echoes-fingerprint-origins/story?id=9909586> Charlotte and Caroline Fingerprinting to Solve Crimes Arch Loop About 29% of people About 6% of people 55% of people Ways Fingerprints are Seen/Found Fingerprints that are not visible to the naked eye Fingerprints that are left in some medium that allows them to be seen by the naked eye Fingerprints that are left in a pliable substance like clay 2. Sometimes the powder is used with special lights that illuminate the prints 3. Document location and time prints were found 4. Investigators carefully place a clear piece of tape over the print. 5. Tape is placed onto a card for further investigation and suspect identification The FBI uses the Integrated Automated Fingerprint Identification System (IAFIS) The IAFIS is a national fingerprint and criminal history system It is able to perform automated fingerprint searches, latent searches, electronic image storage, and electronic exchange of fingerprints and responses. The IAFIS has the fingerprints of more than 70 million subjects (criminals) and 34 million civil prints (normal citizens w/ no criminal history) The IAFIS also has 73,00 known and suspected terrorists (U.S. and international law enforcement who work with U.S. combined) Finding Prints Crime Scene Fingerprint evidence saved one of these twins! Even at 33 years old, this case was solved with fingerprinting technology <http://losangeles.cbslocal.com/2011/04/27/fingerprints-help-lapd-detectives-solve-33-year-old-murder-case/>