Disclosed herein is an illegal copy prevention system and method. In short, an anti-copy prevention system of the present invention includes, a chipless RFID disk having a print layer distributed with metal fibers; an Optical Disk Drive (ODD) reading, recorded information when mounted with the chipless RFID disk; and a reader installed in the disk drive to sense whether metal fibers distributed at the printed layer exists and a unique ID contained in the metal fiber.