Identity authentication system and method
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United States of America Patent
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Mar 10, 2009
Grant Date -
Sep 2, 2004
app pub date -
Nov 26, 2003
filing date -
Nov 27, 2002
priority date (Note) -
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Abstract
A method and system for generating an authentication code that depends at least in part on a dynamic value that changes over time, an event state associated with the occurrence of an event, and a secret associated with an authentication device. By generating the authentication code responsive to an event state, an identity authentication code can be used to verify identity and to communicate event state information, and to do so in a secure manner.
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