The “composition” of sweat that is stored when contact edge skin reaches a surface is a complex blend. Late studies have recognized several mixes present in human sweat. An extensive number of studies into the way of sweat have been performed by both the dermatology and measurable science groups. Specifically, various studies have researched how the compound “composition” of these “residues” changes with time, which is a basic issue for the unique mark analyst. What is the composition of latent print residue and how does it affect the viability of latent prints. The techniques available for fingerprinting the deceased. Include methods of fingerprinting the deceased in all forms of decomposition.