What is generally a key factor in selecting a latent print development technique?

A key factor in selecting a latent print development technique is the surface texture. Different surfaces interact with latent prints in distinct ways, which can affect the visibility and quality of the developed print. For instance, smooth surfaces might allow for different techniques compared to porous surfaces, which may require specific chemical methods for effective development. The texture can influence the choice of powders, chemicals, or alternate light sources used in the development process, thus directly impacting the ability to retrieve usable prints.

While environmental conditions, chemical composition of the print, and available equipment are also important considerations in the broader context of latent print analysis, they do not outweigh the immediate need to understand how surface texture influences the choice of development techniques. In practical situations, the nature of the surface often dictates which methods will work best, making it a primary consideration for examiners when processing latent prints.