Hypnogazer

A hypnogazer was a form of medical device that could place a being into a hypnotic state, allowing a doctor or law enforcement agent to question them about their past. Many bounty hunters managed to obtain hypnogazers on the black market, and used them to compel other beings to do their bidding. Animals or beings with semi translucent eyelids or some other form of protection could not be influenced by such a device and were considered to be immune to it with said eyelid closed.

Text and facts from the “Hypnogazer/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.