Airport screening equipment

The federal Undetectable Firearms Act of 1988 (RL. 100-649) bans the manufacmre, import, or sale of guns that cannot be detected by metal detectors or airport screening equipment (such as guns made mostly of plastic). 

Quality control on detection equipment presents problems from improvements and modifications to the original instrument to the question of how to check the performance of a deployed instrument. In an airport or seaport environment, screening of cargo remains an unsolved problem. In areas of conflict or terrorism, remote (standoff) detection remains a much sought-after goal [19-20]. 

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