El principle Locard Exchange is a concept that was developed by Dr. Edmond Locard (1877-1966). Locard speculated that every time you make contact with another person, place, or thing’s most emblematic landmarks, the result It is an exchange of physical materials. He believed that no matter where criminals go or what criminals do, when in contact with things, criminals leave everything behind. type evidence, including DNA, fingerprints, hair, skin cells, blood, bodily fluids, clothing pieces, fibers and more. At the same time, they also take something from the scene.
Also called Principle Locard transfer. It is a concept that its Author speculum, Every time contact is made with another person, place, or thing’s most emblematic landmarks, the result It is an exchange of physical materials.
In the scene of the crime There is always an exchange of materials (synthetic, biological, genetic) between the victim, the murderer and the context. For example in /// de violation An exchange of fluids, scratches, blood, and tissue remains occurs, which facilitates the reconstruction of the acts e identification of the aggressor.
Therefore, consequently, Locard stated the following:
“No one can commit a crime with the intensity that that action requires without leaving the numerous signs of its presence, the offender has left marks of his activity on the scene of crime and, on the other hand, will take the clues of where it has state or what has done. "
Following the same store of the argument, the criminalist wrote:
“The microscopic remains that cover our clothes and our bodies are silent, reliable and faithful witnesses of our movements and our encounters.”
