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Evidence packaging involves the specialized packaging methods and materials used for physical evidence. Items need to be collected at a crime scene or a fire scene, forwarded to a laboratory for forensic analysis , put in secure storage, and used in a courtroom, all while maintaining the chain of custody .
An identifiable person must always have the physical custody of a piece of evidence. In practice, this means that a police officer or detective will take charge of a piece of evidence, document its collection, and hand it over to an evidence clerk for storage in a secure place. These transactions, and every succeeding transaction between the ...
Entomological evidence collection is the process of collecting evidence based on insect clues used in criminal investigations.If evidence is not carefully preserved at a crime scene after a death, it may be difficult or impossible for an entomologist to make an accurate identification of specimens, if for example, all morphological characteristics are not preserved.
For example, Interpol has published standards to combat corruption, and Standard 4.12 [5] refers to systems and states: "Having and maintaining systems of revenue collection, money and property handling and for the control and preservation of evidence that ensures that those collecting or handling money, dealing with evidence or handling ...
Contaminated evidence is any foreign material that is introduced to a crime scene after the crime is committed. [1] Contaminated evidence can be brought in by witnesses, suspects, victims, emergency responders, fire fighters, police officers and investigators. [2] Juries expect to see forensic evidence before they render a verdict based on that ...
Also deals with retracing processes and procedures leading to accidents in operation of vehicles or machinery. Forensic materials engineering – focuses on the material evidence from crime or accident scenes, seeking defects in those materials which might explain why an accident occurred, or the source of a specific material to identify a ...
The collection method used is entirely based on what the evidence type is and the surface it is on. It is also important to note that great care must be taken to prevent contamination of the evidence with other substances (such as natural oil and sweat on the hand of the collector).
Common types of photography such as creative and artistic photography give a different purpose than forensic photography. Crime scene photography allows one to capture essential aspects of the crime scene, including its scope, the focal points of the scene, and any physical or material evidence found at or from a result of it. [5]