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Dominik Berger, Marc Melchior: System for interchanging data between at least two contactless data storage media. Infineon Technologies, Darby & Darby, December 19, 2006: US07150407 (27 worldwide citation)

System for interchanging data between at least two contactless data storage media, particularly contactless chip cards, wherein at least one of the contactless data storage media controls the data interchange as a master, and the at least one other data storage medium is controlled as a slave.


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