Which practice best protects the integrity of evidence during a policing investigation?

• A. Document and preserve the chain of custody with unbroken transfer records.
• B. Share evidence with other departments without logging.
• C. Alter the evidence to fit the case.
• D. Withhold custody documents to speed up the process.

Answer: (A)

Maintaining an unbroken record of who handled the evidence, when, where it was stored, and how it was preserved is essential for integrity. This chain of custody creates a traceable history that shows the evidence has remained unaltered since collection, guarding against tampering, contamination, or questions about authenticity. Such documentation also supports admissibility in court by proving provenance and proper handling.

Sharing evidence with other departments without logging breaks the chain and makes it impossible to prove provenance. Altering the evidence constitutes tampering and undermines the entire investigation. Withholding custody documents to speed things up defeats the purpose of proper documentation and can jeopardize legal processes. Therefore, documenting and preserving the chain of custody with unbroken transfer records best protects the integrity of evidence.