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Apple used freshly deployed iBeacon sensors to virtually -- and personally -- accompany iPhone, iPad or iPod-toting shoppers through its US stores. Code woven into Apple's newest iOS mobile operating software lets the sensors tell when one of the California company's gadgets is nearby in-store and then fires off messages about deals, products or other relevant information to draw a potential buyer in. For example, iBeacon could chime in about iPads when someone is checking out the Apple tablets, or weigh in on iPhone covers or ear buds when a shopper pauses at an accessories display. The sensors "push" information to shoppers' iPads, iPhones or iPods using wireless Bluetooth technology.