What is the inner perimeter in a crime scene context?

The inner perimeter in a crime scene context refers to a designated area that is specifically set up to limit access to the crime scene for authorized personnel only. The concept of it being "50% larger than the scene" is significant in ensuring that not only the immediate scene is protected but also the surrounding area, which could potentially hold additional evidence or contextual information relevant to the investigation.

This expanded area is essential for maintaining the integrity of the crime scene, allowing investigators adequate space to work while preventing contamination or interference from individuals who are not involved in the investigation. By establishing a clear boundary that includes not just the location where the offense occurred, but also extra space around it, investigators are better equipped to gather evidence, keep track of potential witnesses, and conduct thorough examinations without the risk of outside influences.