The good people at Adafruit have a new tutorial up on making a wearable display, powered by a Pi, that clips on to your regular glasses or (if you’re a Terminator with perfect vision) sunglasses.
The composite display from a pair of “Private Display Glasses” – glasses which are meant to allow you to watch immersive video from the comfort of your own sofa/bed/deckchair - is hacked into a new, 3D-printed shell (the files for the shell are available on Thingiverse), and attached to a Pi along with a mini-keyboard, which lives in your pocket.
(On watching that video, Gordon said “That looks silly.” I replied: “SO DOES YOUR FACE.” There is a hostile working environment at Pi Towers.)
We love it as a proof of concept, and it’s not too much of a leap to get voice recognition (which the Pi handles admirably – you’ll find a mountain of pointers in this forum thread) working on a piece of kit like this; mounting a Raspberry Pi camera board on there shouldn’t be too much of a stretch either. If you have a go yourselves, get in touch: we’d love to see where this goes next!