Contactless data carrier
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United States of America Patent
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Nov 23, 2010
Issued Date -
N/A
app pub date -
Apr 13, 2004
filing date -
Apr 14, 2003
priority date (Note) -
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Abstract
The invention relates to an apparatus as well as a method for reliably determining the deliberate use of a contactless data carrier. Beside an antenna-based data transmission channel in dependence on the data to be transmitted additionally an optical data transmission channel between reading device and data carrier can be employed.
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