Mr. Hero conquering buddhavamsa Lecturer, courses pertaining to science, Kasetsart University Revealed that the identity authentication, using evidence from the welded type. Is used as the key to solve the problem of crime to date. Welded type alias as a result of duplication from friction coating found on parts of the fingers, hands, and feet joints type caused by a blend of different types of chemical compounds resulting from the natural secretions, blood screening and other passenger screening over the natural impurities, mainly comes from the sebaceous glands, sweat.Mr. Chai said that the hero Roy type alias can be found on all types of surfaces, and a method for detecting the fingerprint printing techniques a notch that vary. The latest was found a new technique to detect print fingerprint footprint. From the surface, there are no pores and half with surface. In the dark and light areas by chemical groups of the notran scene. Have volatile properties. The catch with the finger joints to check printing and UV radiation using 366 nm wave length, projected to the target the purple finger prints very clear."These techniques based on the modular structure of the substance with a sleek, Lake gulls era (Conjugated) with unique properties to absorb UV radiation in the range the handle with anti-slip yuak chemicals due to the secretion from sweat so that it appears to glow in the dark. When illuminated with UV radiation, and this technique can also be applied to a surface characterised by dark era of all colors and easy to search for fingerprints in the dark. "
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