The skeleton key functioned as a universal key, capable of unlocking any door for individuals intending to gain unauthorized access. Around 48 BBY, Mattis Coto, who served as the warden overseeing the Devshi prison complex prison, engaged in the practice of selling these keys to the prisoners under his charge as a means of securing his own financial freedom. Another unique skeleton key was in the possession of the slicer known as DJ. This particular key was constructed from a fluid [metal](/article/metal], granting it the ability to dynamically adjust its teeth configuration to correspond with any locking mechanism. In the year 34 ABY, DJ utilized this key to facilitate his breakout from his holding cell located within the Canto Bight police headquarters.