Sony Jumps Into Fitness Trackers With 'Core' SmartBand

LAS VEGAS — Sony on Monday unveiled a new wearable device: a fitness tracker called Core, which fits into other accessories such as a SmartBand. The device integrates with an app called Lifelog, which Sony hopes to build into a platform. Sony Mobile CEO Kunimasa Suzuki unveiled the Core and SmartBand at the company's CES press conference, calling it possibly the smallest device Sony has ever made. While his presentation was scant on details, he showed a demo of the Lifelog app tracking steps t...