Superglue polymerizes on certain latent fingerprints to produce which colored deposit?

When superglue, or cyanoacrylate, is used in the process of developing latent fingerprints, it undergoes a chemical reaction (polymerization) when exposed to moisture in the air. This reaction creates a polymer that adheres to the details of the fingerprint ridge patterns. The result of this interaction is a visible white deposit that outlines the fingerprint patterns.

The white deposit produced is a significant indicator of the presence of a latent print and allows examiners to visualize and analyze fingerprints on various surfaces. This method of developing prints is particularly effective on non-porous materials like plastics, metals, and glass, which often do not retain fingerprints without such enhancement techniques.