Which method is currently most effective for visualizing latent prints?

The method of high-intensity light sources is particularly effective for visualizing latent prints because it enhances the visibility of the prints on various surfaces. Latent prints are often composed of sweat, oils, and other substances that can be difficult to detect with the naked eye. High-intensity light sources, which can include specialized lamps and alternate light sources, provide a way to illuminate these prints. The increased light intensity can reveal contrast between the print and the background material. This technique can be applied to a wide range of surfaces and enhances the detection of prints that may otherwise be missed.

In comparison, other methods such as chemically induced fluorescence, UV light sources, and infrared photography may have their uses in specific scenarios, but they may not be as universally effective or may require particular conditions to work optimally. For example, while UV light can assist in certain situations, it may not reveal all types of latent prints as effectively as high-intensity light. Each technique has its particular strengths; however, the versatility and broad effectiveness of high-intensity light sources make them a go-to method in forensic investigations for capturing latent prints.