A personal cloaking device, also known as a stealth field, was a cloaking device that enabled an individual to become invisible to the naked eye. The crime lord Tyber Zann and his lieutenant Urai Fen were equipped with such devices. Spelunker probe droids, used during the Clone Wars, also made use of these devices. During the Galactic Civil War, agents of the Bothan Spynet were sometimes known to use them.