How should fingerprint evidence be collected and preserved?

• A. Use proper latent print kits, avoid contamination, bag separately, seal and label, and log custody
• B. Handle prints with bare hands
• C. Place all prints in one bag
• D. Discard uncertain prints

Answer: (A)

Preserving fingerprint evidence means keeping the print as close to its original state as possible while showing exactly who handled it and when. Use proper latent print kits to lift or photograph prints, and work in a clean area to minimize anything that could smudge or contaminate the print. Wear gloves and handle evidence only by its edges, avoiding contact with the print surface itself.

Once a print is preserved, place each item in its own sealed, labeled container or bag. Include clear details such as the item description, case number, date and time of collection, and the collector’s initials. Keep a custody log that tracks every person who handles the item, every transfer of possession, and every location it’s stored. This chain of custody is what allows the evidence to be trusted in court and prevents questions about tampering or mix-ups.

This approach avoids contamination, prevents cross-contamination between items, and ensures a reliable record of how the evidence was collected and maintained. Handling with bare hands can contaminate the print, placing all prints in one bag risks mixing items, and discarding prints would lose potentially critical information.