Google Glass text input has until now been restricted to voice commands, but Minuum's keyboard is aiming to change that. The implementation is quite similar to that of the existing Minuum keyboards: a single line of staggered letters along which you swipe and tap. Minuum's algorithms then determine what it is that you're trying to type.
It's an interesting concept to be sure, and we're glad to see Glass getting new types of text input. In addition to the swiping/tapping mode, Minuum has also crafted a motion-sensing mode for their Glass keyboard that lets the user move their head around and tap to select letters. It's sure to make you look moderately crazy when out and about.
The final part of the video shows off a few other concepts, including eye movement tracking, a secondary motion sensing ring, and virtual key overlays on other surfaces. These are less likely to happen, at least with the current version of Google Glass, but at least they're thinking about new and interesting ways to input text on wearables. Like swiping on the Galaxy Gear and Omate TrueSmart.