Cheiloscopy

CHEILOSCOPY During the investigation of a crime, law enforcement officials collect evidence. This evidence, along with witness statements is later used in courts to prove that a crime was committed and to convict the person or persons responsive for committing that crime. In 1910, Edmond Locard of the University of Lyons, first recognized the value of evidence to solve crimes and convict criminals. He developed a theory about evidence called the contact tract theory. This theory states that criminals will always take with them a trace of something from the scene of the crime, and will always leave behind a trace of having been there. The job of a forensic scientist is to locate the trace evidence, subject it to analysis in the lab, and then put it together with all the other evidence to solve the crime. LIP PRINTS MATERIALS  lipstick (dark colors work best)  white paper  pen or pencil PROCEDURE 1. Put lipstick on both of your lips. Rub your lips together to spread the lipstick evenly. 2. Fold the white paper in half. 3. Place the folded paper between your lips and firmly press your lips against it. Be careful not to slide your lips on the paper so your lip print will not smudge. 4. Remove the paper and unfold it. Write your name on the paper to identify the lip print as yours. 5. Examine the lip print. What do you notice about it? Are there any unique qualities that would let you identify it as yours? LIP PRINT CLASSIFICATION
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