Method and apparatus for determining adjacency of wireless device to POS terminal
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United States of America Patent
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Aug 14, 2007
Grant Date -
Apr 20, 2006
app pub date -
Oct 14, 2004
filing date -
Oct 14, 2004
priority date (Note) -
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Abstract
One or more stationary wireless readers are used to determine the relative strength of calibration signals sent from fixed locations adjacent to POS terminals. Then, the signal strength of signals being transmitted by wireless devices within range of the one or more wireless readers is evaluated to determine the relative position of each wireless device to the POS terminals. This allows an operator of the POS system to determine the proximity of each wireless device relative to the POS terminals.
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