Santa's 5 Best Tech Innovations

Santa Claus—according to song and legend, he's a man with quite a skill set. And that's what bothers kids when they start thinking about it. How does he know who's sleeping and who's awake? Exactly how does his workshop make enough toys for all the good children in the course of a year, and how does he deliver them all in a single night? And can anyone explain how such a rotund man can squeeze down all those chimneys?