Magnetic devices and components for storage, processing and display of information, namely, foil sheetings and foil bands, stickers, labels, bands, threads, discs, cards or plates with magnetic layers; optical devices and components for storage, processing and display of information, namely, foil sheetings and foil bands, stickers, labels, bands, threads, discs, cards or plates with diffractive, refractive or reflective layers also comprising optically active layers and/or optically active th...