CRIM 355 Chapter Notes - Chapter 3: Digital Image, Automated Fingerprint Identification, Nuclear Dna
20 Mar 2017
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Every crime scene has to be treated on an individual basis: having its own peculiar history, circumstances, and problems: any case can find physical evidence [violent crimes tend to yield more physical evidence] Hair, dna, fingerprints, footprints, paint, fibre, glass etc. Common types of physical evidence: blood, semen, and saliva: liquid/dried (animal/human) present in a form to suggest a relation to the offense/the people involved in a crime. Explosives: any device containing an explosive charge + objects that are suspected to have residues of explosives. Fibers: natural/synthetic fiber whose transfer may be useful in establishing a relationship between objects and/or people. Tire markings, shoe impressions), organs + physiological fluids, paint, Petroleum product, plastic bags, plastic + rubber + other polymers, powder residues, serial numbers, soil and minerals, tool marks, vehicle lights, wood + other vegetative matter. Pro(cid:272)ess of deter(cid:373)i(cid:374)i(cid:374)g a su(cid:271)sta(cid:374)(cid:272)e"s physical/chemical identity of a substance with as near absolute certainty as existing analytical techniques will permit.
