Radio frequency activated charge card
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United States of America Patent
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May 2, 1995
Issued Date -
N/A
app pub date -
Jul 20, 1993
filing date -
Jul 20, 1993
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A system for changing the activation status of a selected data card such as a charge card by broadcasting an appropriate RF signal. An antenna embedded in the card detects and decodes the signal, and operates a transducer which changes the card appearance, alters magnetic stripe information, or alters the information contained within the card.
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