Is that they are in fact iron detectors.
Over the past 10 years, like many of you all, I have passed through the scrutinizing gaze of innumerable metal detectors. Before I wizened up, I was beeping every time, or annoyingly taking off my shoes, belt, watch and anything else even vaguely metallic.
So I started an sort anecdotal investigation.
I began quasi-scientifically testing all manner of different materials during my airport travels, wearing one metallic item at a time to see what made it through.
Steel toed boots were the absolute worst. Got the five alarm beep every time, forcing me to walk barefoot through the scan a second time.
Watches with grey metal and even small change (like dimes) produced a similar result.
Same deal with belts with grey metallic buckles.
Then one day I wore a prototype generation-four Stashbelt through security. (For the record, I never take off my belt in security until asked). And I glided through with nary a beep.
Puzzled, I tried this time and time again. Even when my fellow travellers were complaining about super sensitive scanners, the StashBelt got through no problem.
As it turns out, metal detectors are in fact IRON detectors. They pick up ferrous metals only, so other base metals like gold, copper and zinc will pass unnoticed.
As such, current generation-six StashBelts do not contain significant quantities of iron. The buckle, though it looks silvery, is a copper-zinc alloy. The zipper meanwhile is made of high-test plastic.
Morale of the story? Your StashBelt will pass through security hassle free.
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