• It is very likely that a large (15-20 cm in diameter), irregularly-shaped, cm-thick pancake with beveled edges, taped to the abdomen, would be invisible to this technology, ironically, because of its large volume, since it is easily confused with normal anatomy.
• Leon Kaufman and Joseph W. Carlson • In a piece titled “An evaluation of airport x-ray backscatter units based on image characteristics,” which they wrote for the Journal of Transportation Security. To put it simply – if terrorists were smart enough to create pancake-shaped plastic explosives that look like someone’s belly on a full-body scanner, the technology would be defeated and we’d all be dead. Good to know.  source

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