Identification medium with passive electronic data carrier storing a plurality of independent applications
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United States of America Patent
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Oct 3, 2000
Grant Date -
N/A
app pub date -
Jan 21, 1998
filing date -
Mar 11, 1996
priority date (Note) -
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Abstract
An identification medium with passive electronic data carrier and contactless, encoded communication with an associated read and write station (WR) has in a memory (42) a data organization with a common data field (CDF), with invariable, uncopiable master data (44), with a segmentable application data field (ADF), in which several independent applications can be written in application segments S1, S2, S3). A hierarchical authorization system (A) valid for all the identification media (IM-S) and all the read and write stations (WR) is established, with which each identification medium (IM-S) must be initialized and which ensures the mutual uninfluenceability of all the independent applications.
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