Fingerprints are one of the most valuable forms of evidence due to their uniqueness. They are found on objects present at a crime scene and are used to identify the sus-pect or criminal, and link them to the crime scene, weapon, or object. Fingermarks are formed by sweat released from pores present on the friction ridge skin of hands. Finger ridges contain a large number of sweat pores. When the finger touches any surface, the sweat from these pores gets deposited in form of contours, which are the mirror image of the ridge patterns. Since sweat is colorless in nature, its deposition on a surface also produces colorless impressions, which are called latent fingerprints.1