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How retail stores track your in-store movements via smartphone –without you connecting to their WiFi

By The Economist
Tuesday, July 23, 2013 5:18 EDT
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Close up portrait of a young stylish teenager woman using a smartphone device while visiting the city, leaning on a fashion store shop window while shopping for clothes via Shutterstock
 
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[Close up portrait of a young stylish teenager woman using a smartphone device while visiting the city, leaning on a fashion store shop window while shopping for clothes via Shutterstock.com.]

 
 
 
 
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