1
Michel Ugon: Portable data carrier including a microprocessor. Compagnie Internationale pour l Informatique, Kerkam Stowell Kondracki & Clarke, July 8, 1980: US04211919 (198 worldwide citation)

A portable data or information carrier in the form of a card or the like. In order to maximize the confidentiality of information stored in the carrier, and more specifically to limit the amount of information available to a would-be defrauder monitoring data lines connecting the data carrier to ext ...


2
Ugon Michel: Portable data carrier including a microprocessor. Cii Honeywell Bull, March 23, 1979: FR2401459-A1 (18 worldwide citation)

A portable data or information carrier in the form of a card or the like. In order to maximize the confidentiality of information stored in the carrier, and more specifically to limit the amount of information available to a would-be defrauder monitoring data lines connecting the data carrier to ext ...