Why Apple's iBeacon Hasn't Taken Off—Yet

Hillshire Brands sees the promise of Apple's iBeacon, software that's been embedded in iOS 7 for a year. With iBeacon, Hillshire can track a shopper wheeling through a grocery store and send his iPhone a coupon or an ad for sausages just as he approaches the right cooler. Hillshire says consumers in 10 U.S. test cities who received iBeacon messages via apps such as recipe service Epicurious have been 20 times likelier to buy its