This week, Google announced plans to invite 8,000 users to test Google Glass, which have already been available to developers for $1,500, and are expected to hit stores later this year or early next year. The device is the most high-profile example of the latest Silicon Valley trend: wearable computing. For its part, Apple is rumored to be developing a computerized watch product, but unlike Google Glass, no one has seen the device in public.
