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The direct Transfer Method is a method used for transferring the latent marks and fingerprints from the skin surface, before development onto a clean substrate such as on glass, sheet, etc. The direct transfer technique started with iodine and electrographic techniques in which the transfer mediums were rolled against the surface of human skin.  When […]

Lifting fingerprints is a useful technique to preserve fingerprints or other developed marks on the surface. However, it is not recommended (and even possible) to always lift fingerprints. This post not only states the various ways to lift fingerprints but also the best lifting methods. Following is the table stating the possible lifting methods based

Is it possible to Find Fingerprints on Human Skin and Body? When and When Not? Fingerprints can also be found on human skin but many forensic experts believed their development to be a challenging task. They are usually latent (not seen naked eye), and rarely visible (from blood, dirt, paint, etc.) marks. Though skin is

Fingerprints on the plastic surface have more ridge details when compared to porous surfaces such as fingerprints on clothes. However, as the nature of plastic is a non-porous substrate, the chance of finding finger marks is less as compared to semi-porous surfaces such as fingerprints on paper. Latent fingerprints on plastic surfaces can be developed

Acid Violet 17 is a triarylmethane dye that stains protein in blood to give a dark purple color and produces some fluorescence in the red and near-infrared region. It is one of the most recommended blood fingerprint enhancement methods on porous surfaces. Developed by: First proposed in 2001 by Sear and coworkers at Home Office

Acid Yellow 7 is an amino ketone dye that stains protein in blood to give a pale yellow color and produces a bright yellow fluorescence when illuminated with blue light (385 to 509 nm). It is the most widely used method for the enhancement of blood fingerprints on non-porous dark-colored surfaces. Developed by: The development