Rumors have abounded this month that Apple is designing a smart watch--maybe even a flexible-glass, slap-bracelet type of device. As cool as that sounds, an "iWatch" needs to be equal parts form and function for working adults to take it seriously. There's still no confirmation that such a device is being developed, but let's consider what it would take for it to have a serious impact on mobile productivity.Related StoriesUK gamers disappointed with PS4 launchFirst Google Glass review and hands-on test appears online
