EC-Council: Computer Hacking Forensic Investigator(CHFI-V10) |
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Module 1 : Computer Forensics in Today's World |
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| Notes available : 31 |
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Note ID: 120
Locard‘s exchange principle
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Locard‘s exchange principle is a forensic science principle that states that when two objects come into contact, they exchange microscopic material. This principle also states that the perpetrator of a crime will bring something into the crime scene and leave with something from it. In forensic science, Locard‘s principle holds that the perpetrator of a crime will bring something into the crime scene and leave with something from it, and that both can be used as forensic evidence.
The principle was originally devised by Dr. Edmond Locard (1877–1966), a criminologist and the director of the first crime laboratory in Lyon, France. Locard was a pioneer in forensic science and became known as the Sherlock Holmes of Lyon, France.
The principle has had a significant impact on how trace evidence is interpreted. For example, when two objects come into contact, they may also deform or damage one another.
The extent of the transfer of forensic evidence is determined by the intensity, duration, and nature of the materials in contact.
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