Which method is used to develop and lift latent fingerprints?

The method used to develop and lift latent fingerprints is primarily dusting with powders or chemical reactions. This technique involves applying fine powders that adhere to the oils and sweat left behind by a fingerprint, thereby making the pattern visible. The powders can be various colors to provide contrast against the surface being examined, which enhances the ability to see the fingerprints.

Additionally, there are other chemical methods, like superglue fuming or ninhydrin application, that react with the amino acids and moisture in fingerprints, further aiding in making the prints visible for collection. This combination of techniques allows forensic experts to effectively retrieve and analyze latent fingerprints from various surfaces, which is crucial in investigations.

While photographing is essential for documenting evidence, it does not actually develop or lift fingerprints. Similarly, ultraviolet light can be useful in certain contexts, but it is not typically employed for latent fingerprint recovery. Applying heat to a surface is not a standard practice in fingerprint development and can potentially damage important evidence.