Which latent print development method is particularly effective on non-porous surfaces?

Cyanoacrylate fuming is particularly effective on non-porous surfaces because it utilizes a process where cyanoacrylate (commonly known as super glue) vapors adhere to the moisture and oils in the latent print residue. Upon exposure to heat, the vapors polymerize and create a visible and durable print on the surface. This method works exceptionally well on materials such as glass, plastic, and metal, which are classified as non-porous because they do not absorb moisture.

In contrast, ninhydrin is best used on porous surfaces like paper, as it reacts with amino acids found in the sweat of fingerprints to produce a color change. Alcohol-based solvents can be effective in developing prints but are more suited for specific applications and not universally effective on non-porous surfaces. Silver nitrate, while useful for developing prints on surfaces like wood or paper, requires a moist environment to react and is not ideal for use on non-porous materials. Therefore, cyanoacrylate fuming stands out as the most efficient method when attempting to develop latent prints on non-porous surfaces.