'Imaginary Pen' Lets Users Wave Wildly to Write
Interestingly, Linderman also analyzed how often the computer correctly identified a hand movement as the subject's intended character. When a numeral had been written five times, the program labeled it correctly 63-percent of the time, and when it had been written 35 times, the system was right 97 times out of 100.
While it's difficult to imagine people gesticulating wildly to communicate digitally, we do have several things to note. Firstly, a decade ago, people with their heads down, thumbs typing on a cell phone, would have looked ridiculous. Secondly, this method appears to be more intuitive than earlier forms of sensory writing (e.g., the Palm Pilot's scribe system). Lastly, the gloves Linderman designed are fingerless; just throw a couple of studs on the knuckles, and it's a new fashion. [From: PopSci.com]