Each February, hundreds of high-tech entrepreneurs and venture capitalists meet in Scottsdale, Ariz., for the most exclusive trade show of the year. Closed to the general public, Demo is a place where even a no-name start-up gets a chance to impress. Here's a peek at this year's coolest innovations. --By Anita Hamilton
SIZE ME UP, SCOTTY
Hate trying on clothes in stores? The Intellifit System, at right, makes it easier by taking your measurements using low-power radio waves, then suggesting the right size for you. Step into the glass booth, which looks like the Star Trek transporter, and 10 seconds later...