They should be available about the time I get my flying car.

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Promoting this video and sending it back into the queue for one more try; last queued Thursday, December 18th, 2014 2:07pm PST - promote requested by enoch.

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It's a brilliant idea, I'd patent it. I believe it could be done (there are projector modules that would almost fit in their form factor), but only at an extraordinarily high price and with other major shortcomings like power usage that would need to be overcome.

Also, the unavoidable shadow your finger would cast but which they leave out of the mock up videos would be a problem.

The shadow could be solved with 2 bracelets projecting, one from the wrist, one from below the elbow, or maybe even just 2 projectors on the wrist separated enough to compensate for finger shadows. Now we just need a miniature terminator power cell and a few years of miniaturization of cell phone circuits and we're there! ;-)

You would need to be in a very dark environment for it to look anything like what they show. You can't project anything darker than the screen surface.

What they're showing certainly is ridiculous, but I'd be pretty happy with a monochrome green projection. That said, in all likelihood some sort of flexible OLED patch or wrist band would probably be practical long before this is. Probably even some sort of fluorescing tattoo.

I do like the possibilities of short throw pico projectors combined with machine vision for user interfaces though. You could take Newtboy's dual projector concept and have something the size of a couple marker pens that unrolls like a scroll, with the screen in the middle.

When it comes down to it, though, what I really want right now is something about the size of a smartphone, with minimized thickness an e-ink display and a limited feature set (phone, text, e-mail, and basic web surfing), the whole design optimized for battery life and performing just those four functions adequately. An easily replaceable battery would be nice too.

Moving this video to newtboy's personal queue. It failed to receive enough votes to get sifted up to the front page within 2 days.