I won't elaborate on where I work, But a co-worker was walking me around his area the other day and our company has bought these really sophisticated looking "metal detectors". the area was packed with these things and they had a really sophisticated display on them, got me to thinking that maybe they are to detect the vaccinated and the non-vaccinated. They are definitely not your standard airport looking metal detectors. metal detectors generally work on a coil of wire and two oscillators running at beat frequency. when ferrous metal is introduced into the coil, it shifts the frequency of one oscillator and the difference output is detected. The way around it is to wrap a ferrous object in brass (they negate each other). they use to use brass and ferrous cores in cable tv traps decades ago to fine tune the traps. I'm familiar with metal detectors and this didn't look like that. Graphene is carbon based and non-ferrous, takes an electron microscope to see it. I find it difficult to believe they could assemble a shot into a code. guess we will find out when they send us off to the camps. but the metal detector looking gadgets gave me pause.