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Submission + - Backscatter X-Ray Machines Easily Fooled (springerlink.com)

Pinckney writes: A paper by Leon Kaufman and Joseph W. Carlson in the Journal of Transportation Security asserts that x-ray backscatter machines are not very effective even in their intended role. While carelessly placed contraband will be detected, the machines have glaring blind-spots and have difficulty distinguishing explosives from human tissue. As they write, "It is very likely that a large (15–20 cm in diameter), irregularly-shaped, cm-thick pancake [of with beveled edges, taped to the abdomen, would be invisible to this technology... It is also easy to see that an object such as a wire or a boxcutter blade, taped to the side of the body, or even a small gun in the same location, will be invisible."
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Backscatter X-Ray Machines Easily Fooled

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