By <a href="http://gigaom.com/author/superglaze/">David Meyer</a> - <br><br>It’s easy to track people carrying smartphones while they’re outdoors, where GPS works best, but indoors is another matter. This is why we’re increasingly seeing new sensor systems such as <a href="http://gigaom.com/2013/11/20/macys-is-the-first-retailer-to-use-apples-ibeacon-for-in-store-presence/">Apple’s iBeacon</a> that can help stores follow their customers as they browse the shelves. Such systems offer unprecedented opportunities for hyper-personalized marketing, sent to the customer’s mobile device on the basis of where they’re standing.<br><br><a href="http://gigaom.com/2014/02/17/philips-new-intelligent-store-lighting-can-track-shoppers/">READ MORE ON GIGAOM</a>
