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"Ben has a temple droid on the Grimtaash. They send out an automatic transponder signal when they're off on a mission, to find the ship if something goes wrong."

The Millennium Falcon could emit false transponder codes identifying it as the Longshot, Star Princess or Sweet Surprise.

A transponder signal or transponder code was a type of signal that could be used to identify starships[1] or for the purpose of tracking. Some smuggling ships, such as the Millennium Falcon, were capable of transmitting false transponder codes.[2] The droids of Luke Skywalker's Jedi temple sent out automatic transponder signals when on missions, so that the vessel they were aboard could be found if an issue arose.[3] Transponder signals could be utilized to unlock starships from the outside.[4]

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