The Karlsruhe Institute of Technology (KIT) has researched on a glove recognizing 8,000 air-written words.
Again, this device is designed for keyboard replacement on phones/tablets. Are people willing to write in the air? I would personnally last less than a minute in the position adopted by the demonstrator of the picture. Besides, I think I text faster with my two thumbs than with a (virtual) pen in the air!
Why restrain such technology to writing? I would imagine this could help you learn tennis or control the perfect golf swing.
Note: since this was posted, I found Zepp’s sensor doing it pretty well:
Back to our concern, I would replace the left/right clicking and scrolling on a mouse by an index and middle finger movement – the mouse pointing being handled by eye tracking or other devices that we’ll discuss in another post ;-D
Finally, looking at the device size, I understand why Google gave them $80,000: a bit of miniaturization would be great!