Magwit's mystifying hoop

Magwit's Mystifying Hoop was a short-range matter transmitter created by the magician and illusionist Wim Magwit. While a talented performer and magician, the hoop was the perennial favorite and highlight of his performances. By placing items - or himself - through the hoop, they would seem to disappear. In fact, the matter of the object was transmitted backstage, where it reintegrated through a corresponding hoop.

When Boba Fett sought the bounty on Bar-Kooda, he enlisted the aid of Magwit, whose hoop was used by Fett to capture Bar-Kooda. While escaping Bar-Kooda's ship, Bloodstar, Magwit abandoned the hoop. It is possible that Magwit built another and continued performing.

Source

 * Boba Fett: Bounty on Bar-Kooda
 * The Essential Guide to Weapons and Technology