A credit card-sized card having a rotating magnetic memory therein is disclosed. The card is provided using a laminated structure in which a stainless steel, plastic sandwich structure is employed. An opening in the plastic layer provides space for the rotating magnetic disk. A mechanism is provided...http://www.google.fr/patents/US20050194453?utm_source=gb-gplus-shareBrevet US20050194453 - Enhanced smart card with rotating storage
