What technique is not typically used for developing latent prints on paper surfaces?

Silicone rubber casting is not typically used for developing latent prints on paper surfaces. This technique is primarily employed for capturing three-dimensional impressions from substrates such as clay, wax, or other soft materials where the impression can be captured in detail. It involves using a silicone rubber material that is poured over the impression to create a mold, which is then used to form a cast.

In contrast, techniques like ninhydrin and powder dusting are specifically designed for use on porous surfaces like paper. Ninhydrin reacts with amino acids left in the fingerprint residue, resulting in a visible color change that allows the print to be seen. Powder dusting applies a fine powder that adheres to the oils and moisture in the latent print, making it visible against the contrasting background of the paper. Autoradiography, although less common, can be used in some contexts but is not a standard method for developing prints on paper like ninhydrin and dusting are. Therefore, silicone rubber casting, intended for different material applications, stands out as the technique that does not align with the requirements of developing latent prints on paper surfaces.