If the scanner is setright, will detect any contrband
That is trying to be taken aboard a aircraft..
It is a hand held metal detector. It does not "sniff" for drugs or explosives or detect non-metallic objects. It does not create a comparative contouring image as stated above. There are other devices in the security areas that do these tests and most are walk-through devices, some requiring you to stop momentarily (sniffer machine that is a "booth" type device that creates a "puff" of air against your body, and the full body imaging device that has created so much controversy). I hope this helps you and other readers, and not for possible detection avoidance.
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Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them