• sramder@lemmy.world
    link
    fedilink
    English
    arrow-up
    8
    ·
    vor 3 Monaten

    Most of the airports in the US have some sort or chemical detector too. I always get my hands swapped going through PDX because I brought so scary looking circuit boards with my carryon 5 years ago.

      • sramder@lemmy.world
        link
        fedilink
        English
        arrow-up
        6
        ·
        vor 3 Monaten

        It’s been a few years, but they are white round pads, probably 3 inches wide. I’m not sure what’s on the pad, probably a solvent of some kind.

        The pads go in a machine about the size of an larger microwave oven which I believe uses NMR to scan for nitrates and other kinds of explosive residue.

        It was a pair of highschool level sumo robots, lots of wires and motors and gears.