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KMID : 0385520080210030222
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Analytical Science & Technology
2008 Volume.21 No. 3 p.222 ~ p.228
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Developing of latent fingerprint on human skin
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Lee Hee-Il
Choi Mi-Jung
Kim Jai-Hoon
Park Sung-Woo
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Abstract
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On living skin the chances of a successfully developing latent fingerprint are very limited. This is due to the fact that continual perspiration and rapid absorption diffuse into the lipophillic layer on skin. A study was conducted to investigate effectively developing method of latent fingerprints on human skin surfaces and pig skin likely corpse’s skin. We used commercial fingerprint powder, black powders, black magnetic powder, fluorescence magnetic powder, Cyanoacrylate fuming (CA) and direct lifting methods (lifting paper, glasses and photo glossy paper). Developing of fresh fingerprints on living skin was achieved with S-powderblack, CA fuming and CA fuming following S-powder, fluorescence powder. The other powder tends to overwhelm the latent print and the background. But, latent fingerprint residue was disappeared with time after deposit on a living surface. In case of pig skin likely corpse’s skin, latent fingerprint detection was achieved with CA fuming following S-powder and deposited print during 6 hr at 25℃, 40% relative moisture yielded excellent fingerprints with clear ridge details using 1 min CA fuming. And enhancement of fingerprint detection image using forensic light source was achieved.
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KEYWORD
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human skin, latent fingerprint developing
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