Holocron
known originally as a holographic chronicle, this was a recording device used by the ancient Jedi Knights to hold the multitude of teachings and lore needed to maintain the Jedi Knights. Each of these devices provides a visual and vocal way to view the enclosed information. The holocron was essentially a dense crystal, with intricate lattices and vertices which were capable of storing huge amounts of information. Most were small enough to fit in the palm of a human being. Each holocron has a gatekeeper assigned to dispense the information. The gatekeeper contains the cognitive network functions of a Jedi Master, and acts as a search, recovery, and storage allocation program. The devices are shaped like small, translucent cubes, and can be activated by a person controlling The Force. The Holocron can sense the user's ability with the Force, and can block out areas of knowledge that are beyond the user's ability. Despite the name, these holocrons were not limited to the Jedi Knights. Several holocrons containing Sith lore have been discovered as well. For some unknown reason, Sith Holocrons were pyramidal in shape, while Jedi Holocrons were cubic. The technology for constructing a Holocron and storing the personalities and knowledge within one was lost many thousands of years before the Battle of Yavin.