Google Glass: Cage match with the Apple Watch?

Google Glass is the new wearable computer from Google that can be used with smartphones. The video shows some of the things it can do via voice command, and it's certainly interesting, but it is not clear to me that the heads up display adds a lot to the experience. Most of the video examples show using the gadget to record POV (point of view) video. One problem I see right away: I already wear glasses....will there be something for me that clips onto my existing frames?

I'm inclined to think that the widely rumored Apple Watch will be more functional, less obtrusive, and easier to use. But it's nice to see that there is a lot more disruptive stuff in the technology pipeline.

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