Each week Ross Rubin contributes Switched On, a column about consumer technology.
Without a doubt, 3D was the keystone feature touted by every major TV and Blu-ray player manufacturer at CES 2010. But the 3D technology we'll see this year asks more of consumers than previous reinventions. As with HD, they will need new TVs, new video sources, and optimized content like Avatar to make the experience worthwhile.
But consumers will also likely need glasses -- and not particularly fashionable glasses -- to experience the 3D effect. It's a lot to ask customers, given just-
