If one touchscreen is good, how great must two be? Tapping into the same part of the brain that screams how geekily-cool Star Trek tablet props are, the allure of a double-display smartphone or computer isn’t new, but neither has it been done right. That’s not stopped various new attempts, however, Acer’s twin-14-inch Iconia Touchbook notebook for one, or the imminent Sprint Kyocera Echo phone for another. Double-vision each may offer, but the manufacturers responsible are still showing serious myopia in how they’re delivering on the twin-touch dream.











