In the film Superman, Kryptonite crystals were used to store information on planet Krypton. Baby Corell (Superman) was despatched to planet earth in a bed of crystals by his father Durell to save him from the imminent destruction of planet Krypton. The total accumulation of all knowledge spanning twenty eight galaxies were embedded in the crystals which accompanied Superman to planet earth and on reaching adulthood, it was by studying the crystals that Superman acquired a knowledge of his background and the source of his unearthly powers.