Which technique is used to retrieve latent fingerprints from a surface?

• A. Paint over the area.
• B. Lift prints with proper tape.
• C. Erase with solvent.
• D. Expose to UV light only.

Answer: (B)

Retrieving latent fingerprints relies on capturing the invisible residue and preserving the ridge patterns for comparison. Lifting the print with proper tape is the standard method because it physically transfers the fingerprint from the surface onto a card, creating a durable, analyzable imprint without altering or destroying the print. This makes it possible to compare the print in the lab with known samples. Other options would damage or erase the print—painting over the area would obscure the ridges, a solvent could dissolve or smear the print, and UV exposure by itself doesn’t collect the print for analysis.