6 () posted 3 years ago by arcticsleep 3 years ago by arcticsleep +8 / -2 10 comments share 10 comments share save hide report block hide replies
Use a magnetometer or those are irrelevant.
You can stick coins and other metallic objects anywhere on human skin under various circumstances.
One of them being natural and not necessarily noticeable amounts of sweat.
Reading comprehension. Stop putting words in people's mouths.