What is the only effective laser procedure developed for the examination of skin in latent print analysis?

The procedure known as Rhodamine 6G is specifically designed for enhancing latent fingerprints on skin surfaces, making it the only effective laser procedure in this context. This dye, when excited by a laser, fluoresces, which helps in visualizing latent prints that might otherwise be difficult to see. This fluorescence occurs because Rhodamine 6G binds to the amino acids and other residues present in the sweat and oils from the skin, creating a contrast that allows for clearer visualization of the prints.

In contrast to other methods listed, such as Fluorescent Red Dye and Infrared Indication, they either lack specific efficacy for skin examination or are not laser-based techniques, thus limiting their effectiveness for the intended application. Carbon Laser Treatment is also primarily associated with removing surface materials rather than examining and enhancing latent prints. Therefore, Rhodamine 6G stands out as the only effective option for laser-based examination in latent print analysis, particularly concerning skin.