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TRACKS ANALYSIS Irina Kufareva Eugene Raush 11/16/12
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Shoe-print and tire thread examination Forensic footwear evidence can be used in legal proceedings to help prove the identities of persons at the crime scene Determine the brand name and manufacturer of the shoe or tire that made an impression Match against suspect's shoe or tire
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Types of footwear evidence Footwear outsole impressions (Tracks) Footwear outsole impressions are impressions left on an object that was caused by contact with a piece of footwear. Footwear insole imprints Footwear insole imprints are imprints left in the inside of footwear caused by contact from the person’s foot Footwear trace evidence Footwear trace evidence is trace evidence that is recovered from footwear (recovered include skin, glass fragments, body hair, fibers, etc )
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Tracks Visual comparison Matching Directionality Weight Soft surface (e.g. sand)Hard surface (floor)
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Matching Finding matched fragments as mirrored images The art of figuring out what shoe or bicycle is the art of being able to see mirror images. It is not nearly as easy as it sounds
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Find the match ? AB
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B AB
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? AB
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A AB
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? AB
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no match AB
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Find the match
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Tires AB ?
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QUESTIONS?
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