What should be avoided when tagging or marking evidence?

When tagging or marking evidence, it is crucial to ensure that the evidence remains unbiased and that its integrity is preserved throughout the investigative process. Identifying whether an item of evidence came from the victim or the perpetrator can introduce a bias into the handling and interpretation of that evidence. Such identification could lead to assumptions or preconceptions that may influence how investigators approach the evidence or its relevance in the case.

In contrast, indicating the location where the evidence was collected, using a reference number, and providing a brief description of the item are all accepted practices. These actions help maintain a clear chain of custody and provide context that is essential for the later phases of investigation and prosecution. Keeping the evidence objective and factual supports the judicial process, allowing juries and legal professionals to make decisions based on evidence, not presumptions about its origins.