A Garrett body scanner refers to handheld or walk-through metal detectors made by Garrett Metal Detectors (now part of Garrett Security), famous for the Super Scanner V, used globally for security to find weapons, phones, vapes, and contraband by detecting ferrous, non-ferrous, and stainless steel items, with features like simple controls, sensitivity adjustments, and various alarm modes (sound/vibration) for reliable screening at events, airports, and other venues.