Apparatus and method to electromagnetically shield portable consumer devices
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jun 11, 2009
app pub date -
Nov 18, 2008
filing date -
Jun 24, 2005
priority date (Note) -
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Abstract
An apparatus and method is provided to shield contactless portable electronic consumer devices such as radio frequency identification devices (RFID), tokens, mini-cards, key fobs, cellular phones, smartcards, etc. from wireless interrogation. In one embodiment, a contactless portable consumer device which includes a first antenna is shielded from unauthorized wireless interrogation with a radio frequency (RF) shield. The RF shield includes electrically conductive, non-ferromagnetic material and is configured to prevent unauthorized data transfer between a second antenna external to the portable consumer device and the first antenna.
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