Modern weapons detection systems use advanced sensor technology — radar, millimeter wave, or multi-sensor fusion — to screen individuals as they walk through an entry point at normal pace without physical contact, bag removal, or queuing at traditional magnetometer portals. For high-throughput venues — stadiums, arenas, convention centers, and large-scale events — walk-through weapons detection significantly increases both security effectiveness and guest flow compared to traditional checkpoint screening. These systems detect metallic and non-metallic threats while reducing false positives from benign metallic items. The technology is part of the broader security ecosystem alongside body-worn cameras, video surveillance, and two-way radio communication.