In a few days time, Apple is expected to reveal more details about its eagerly anticipated Apple Watch. However, regardless of the watch's capabilities, Apple will likely sell millions of it. Here's why.
I love the promise of activity trackers, that you can improve your health and fitness with the power of metrics and technology. But none of the trackers on the market today can really help to change your life in a significant way.
That's because they're all missing one thing.