The next level aqueous electrolyte reagent (AER) for development of latent fingermarks

Abstract Research literature shows that different forms of aqueous electrolytes develop latent fingermarks on metals, glass and plastic surfaces. These reports describe the development of latent fingermarks using specific electrolytes for specific surfaces. Surface dependency is still a challenge in the fingerprint development process. The current study involves a newly formulated aqueous electrolyte reagent (AER) applied on a variety of surfaces. A proposed reaction mechanism has also been studied and supported by SEM-EDS. A large variety of porous, semi-porous, and non-porous surfaces have been tested for the development of latent fingermarks. Satisfactory response of AER has been observed.