CES, the world’s largest tech show, is quite something to behold. Or it would be if you could actually behold it in person. Almost inconceivably, the industry extravaganza spans the entire Las Vegas Convention Center, the nearby Sands Expo and a dozen or more hotels up and down the Strip. As WSJ best describes it, it is like a Disneyland for tech. This year, you can also see it all - however, only from the little screen through which you see pretty much everything else these days.