Hex Vision was a psionic or similar talent demonstrated by holograms infected with the psychotic hologram psi-virus contracted by Dr. Hildegard Lanstrom, and later Arnold Rimmer and Mr. Flibble. The holo-virus unlocked the dormant, psychic areas of the brain which humans had so far been unable to harness, and enabling hex vision and other abilities. Unfortunately the holo-virus also caused even a genius like Dr. Lanstrom to also go insane. Hex Vision also seems to include the psychic ability of remote viewing and telekinesis, such as when Rimmer remotely flung a fire-axe into Kryten's spine.