Security scanners were surveillance devices used in bases, prisons, factories, mines, laboratories, and other secure facilities to detect infiltrators or invaders. Various types of security scanner were in use by the time of the Galactic Civil War. While the basic 2-dimensional camera has been in use since at least the Jedi Civil War, it was still in use millennia later, a testament to its reliability. Other types of security scanner included motion sensors, infrared sensors, weapons detectors, and holographic recorders. These devices were usually small and unobtrusive, capable of being installed virtually anywhere. Some of the more sophisticated holocams could record video and audio data. Other scanners included precision scanners designed to rapidly turn, track, and zoom in on a target,