Which statement describes latent prints?

Which statement describes latent prints?

• A. They are hidden and require processing to be seen.
• B. They are visible to the naked eye.
• C. They are prints made by liquids.
• D. They are always on metal surfaces.

Answer: (A)

Latent prints are fingerprint impressions that are not visible without enhancement. They form from the natural oils and sweat left on the friction ridges when a finger touches a surface, so they’re hidden at first. To be seen, investigators apply processing methods such as powders or chemical treatments—cyanoacrylate fuming, ninhydrin, or other reagents—depending on the surface. This need to be developed or visualized is what sets latent prints apart from prints you can see with the naked eye, and it explains why processing is essential. Latent prints can appear on many materials, not just metal, and the method chosen depends on the surface type.

Latent prints are fingerprint impressions that are not visible without enhancement. They form from the natural oils and sweat left on the friction ridges when a finger touches a surface, so they’re hidden at first. To be seen, investigators apply processing methods such as powders or chemical treatments—cyanoacrylate fuming, ninhydrin, or other reagents—depending on the surface. This need to be developed or visualized is what sets latent prints apart from prints you can see with the naked eye, and it explains why processing is essential. Latent prints can appear on many materials, not just metal, and the method chosen depends on the surface type.