"Random" airport scanning?

"Random" airport scanning? - White Passenger Plane on Airport

I have been to multiple airports, and no matter what I do I always seem to walk through the metal detector, have it go off randomly even though I have no metal on my person and have to undergo pat-downs and swabbing. Why are these "random" searches always happening? And if I were to fail the drug test (from holding coins and bank notes) then what other searches would the airport force me to undergo?






Pictures about ""Random" airport scanning?"

"Random" airport scanning? - Man in Black Jacket Sitting on Black Chair
"Random" airport scanning? - People Walking on Street
"Random" airport scanning? - Black Fighter Jet on the Road during Night Time



What do they see when they scan you at the airport?

Scanners can detect steel and non-metallic objects on the exterior of the body. Contrary to popular belief they cannot see inside body cavities or diagnose disease. New ATI scanners have been designed to provide passengers with more privacy by showing only a generic outline, which cannot indicate gender or body type.

What are the scanning machines at airports?

There are two types of body scanners: the millimeter wave scanner and the backscatter X-ray. The millimeter wave scanner uses high frequency radio waves to make an image of the body which shows objects hidden under clothes. The backscatter X-ray scanners detect the radiation that reflects from the human body.

Can airports detect drugs?

Full-body scanners are used to detect threatening items and contraband such as weapons, explosives, and drugs under multiple layers of clothing.

Why do I set off scanner at airport?

"The full-body scanners used in all airports since May 2013 are called 'millimeter wave' machines, which bounce electromagnetic waves off the traveler to provide an animated image where a suspicious item might be located," USA TODAY noted.



Random Airport Scanner 2 gameplay #1




Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Nguyen Hung, Abdel Rahman Abu Baker, Abdel Rahman Abu Baker, Brad Kiracofe