[lordCarbonFiber]

A personal HUD with no way to be context sensitive (ie no camera) is dead in the water. I'm biased because Im working in this space. but, I believe context aware augmented reality is the killer app for wearables. Honestly, the people wearing Glass aren't recording you, Google isn't recording you; if you're worried about privacy concerns it's the last thing on the list of things to be terrified about (just an anecdote, my little sister spends an inordinate amount of time subtly snap chatting images of the people around her with her iphone so, odds are your dystopian future of you describe already exists). So long as we are given root access and the option to use our own servers and software, the hardware advances are not the problem. Acting like a Luddite will not protect your privacy.