Control chip

An inhibitor chip was a type of bio-chip found in the brains of every clone trooper in the Galactic Republic. It was implanted into the brain of every clone trooper at the third stage of their development.

The purpose of the chips was to limit the independence and aggressiveness of the clones. They had been installed at the request of Sifo-Dyas to prevent the clones from being controlled by rogue Jedi or Sith. The chips, however, were also tooled to another purpose, to force the clones to comply with the execution of Order 66, which wiped out nearly all Jedi.

The conspiracy was nearly uncovered when the Order 66 function of the inhibitor chip in the clone trooper "Tup" was prematurely activated, causing him to execute the Jedi General Tiplar. Though the Jedi discovered the existence of the inhibitor chip, they never learned that it was also used to issue Order 66, as the clone "Fives," who had been investigating the matter, was killed by a fellow clone trooper. Though Fives had warned that the conspiracy went to the highest level and that Supreme Chancellor Sheev Palpatine had tried to stop him from revealing what he knew, Anakin Skywalker stubbornly refused to believe that Palpatine would be capable of what Fives was describing.

Appearances

 * Star Wars: Episode II Attack of the Clones