System and method for managing usage authorizations based on the use of smart cards
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United States of America Patent
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Sep 18, 2012
Grant Date -
Feb 16, 2006
app pub date -
Aug 13, 2004
filing date -
Aug 13, 2004
priority date (Note) -
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Abstract
Disclosed is a system managing usage authorizations, comprising a central computer system, field devices and smart cards, wherein the system maintains databases containing all information relating to the users, user accounts, user smart cards, field devices and products, establishes and maintains at least at times communication with the field devices, issues instructions based on the available information and transmits to a plurality of field devices, with the field devices maintaining information relating to the smart cards and products so that communication between a field device and a smart card allows at least a portion of the smart card-related instructions to be processed from the instruction list and stored on the field device and to be transmitted to the computer system during the next communication, and wherein the smart cards carry to allow exchange of information with a field device and store instructions.
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