Hologram disc

Hologram discs, also known simply as holodiscs, or holodisks, were a type of storage device onto which holograms could be recorded. During the Clone Wars, Senator Padmé Amidala went on a mission to Cato Neimoidia where she downloaded the tactical coordinates of a new Separatist droid foundry that was being bankrolled by the InterGalactic Banking Clan onto a hologram disc, proving that Senator Rush Clovis, representative of the Banking Clan in the Galactic Senate, was conspiring with the Separatists.

By the time of the late Galactic Civil War, holodiscs were the preferred data storage system in the Anoat sector, and they could be used as a type of currency. The sector's Data Seekers would trade secrets recorded on such discs.

Hologram discs were first mentioned in Han Solo at Stars' End, a 1979 Star Wars Legends novel written by Brian Daley as the first entry in the The Han Solo Adventures trilogy. They became canon when one appeared in "Senate Spy," the fourth episode of the canon animated series Star Wars: The Clone Wars second season.