In case you had any doubts that wearable devices were catching on, Canalys just delivered some tangible proof. The analyst group estimates that the tech industry shipped a total of about 6 million smartwatches and fitness trackers in the first half of 2014, or nearly 700 percent more than it managed a year earlier. Not surprisingly, most of the watches were Samsung devices -- the Korean company's rapid-fire Gear watch releases made it almost ubiquitous. Pebble and Sony also did well in this fledgling space. Fitbit and Jawbone, meanwhile, moved many of the simpler wristbands.