Forget "wearables." The next big thing in mobile devices is "disappearables."
Even as the new Apple Watch piques consumer interest in wrist-worn devices, the pace of innovation and the tumbling cost, and size, of components will make wearables smaller — so small, some in the industry say, that no one will see them.
Within five years, wearables like the Watch could be overtaken by "hearables" — devices with tiny chips and sensors that can fit inside your ear. They, in turn, could be superseded by disappearables — technology tucked inside your clothing, or even inside your body.