I've never completely understood what the full fuss is over the face-mounted cameras. They put high-power zooms and 50MP sensors on the back of cell phones, and nobody bats an eye.
There's fuckloads of recording going on. Do it with a phone? yeah fine. Do it with glasses, world's gonna end.
Put an indicator light on the glasses with a sensor to make sure it's on from the nose bridge.
I'd LOVE to replace my phone with a pair of glasses.