UniTech Diagnostics Systems
this computer manufacturer made a number of devices designed to allow the user to interface with mainframe computers. Many of these devices have systems that reroute normal security systems to allow quick, untraced entry into the system. Imperial forces and many corporate technicians used them in dangerous areas where damaged systems or breaches might cause an entire shutdown if not fixed quickly. The Alliance managed to obtain some of these "patches" and used them to enter Imperial computers.