Metal detectors scan any form of metal around you. And more likely if you do fail the metal detector test, then they are probably going to take out a handheld metal detector to manually scan. Next x-ray machines produce radiation which penetrates nearly anything and anything hidden inside...
Metal detectors scan any form of metal around you. And more likely if you do fail the metal detector test, then they are probably going to take out a handheld metal detector to manually scan.