Indeed. Had I not been trained/certified by Simunitions, I likely wouldn't have realized what the deficiencies actually were.
Particularly since the magnetometers will usually pick up the rebar in the concrete floor.I do think the magnetometer is one's friend. It provides a fast efficient way to screen officers for most forgotten threats.
I would agree that the screening process is intended to catch the forgetful, not the ill-intended. If you have a case like the arrogant idiot smuggling a cartridge in between his toes, I'd point out to him and others that the screening process is not intended to catch prisoners entering super-max. I'd also ask him what he thought he was proving and to whom. I'd also mention that he was delaying the time officers could break for lunch or secure for the day.