True to our promise, we’ve made comfortable typing a reality on smart watches, smart TVs, game controllers, touchless motion devices, and now—smart glasses.

The beauty of a one-line keyboard is the number of different ways you can use it, with all different kinds of sensors. Your typical augmented reality headset is equipped with at least a small touchpad, a motion sensor, and a camera.

We’ve worked with Google Glass for a few months now, and have built versions that let you type either using the touchpad, or by detecting subtle head movement. This is shown in the first part of the video, and we actually prefer the head-tracking technique, which lets you feel like you’re looking at the letters that you want to type.

In the final portion of the video, we show some proof-of-concept techniques, which wouldn’t all necessarily work with the current version of Google Glass. These include:

• Tracking of eye movement

• A secondary motion-sensing device such as a ring

• Keys overlaid on your hand, forearm, or another surface

Whatever wearable displays end up looking like, we’ll be ready for them – though we’re keeping our fingers crossed for those contact lenses! Because what good is a wearable device if you can’t input information into it?

If you love the demo, help us spread the word about the future of typing by sharing on Twitter, Facebook, and Google+!