Infrared motion sensors, which are also called thermal sensors and often known as night scopes, were sensor units engineered to identify heat signatures and movement in conditions of near or complete darkness. To present visual information to the user, these sensors worked in tandem with display screens.
Frequently employed by scout big game hunters and soldiers, infrared motion sensors were also a popular tool for mercenaries and bounty hunters. The Ubese famously integrated these sensors into their combat helmets, while Boba Fett included a similar instrument in his Mandalorian battle armor. Compact models could be installed in single-lens monocles worn over the eye. The Wookiee bounty hunter Snoova was known to utilize such a device.