Printed on back of card: "This is a sample LaserCard brand optical memory card for data recording. It contains a reflective laser / optical recording stripe for storing up to 2 megabytes of digital data on a wallet-sized card. That is the equivalent of about 800 pages of typed information. The LaserCard optical memory card is designed for health/medical applications, publishing systems, record keeping systems, and transaction systems. U.S. Patents: 4,284,716; 4, 542, 288; 4, 544, 835."