Im a US Citizen living in another country and I got the email from +Google Glass
saying that they are only offering the glass explorer program to US citizens with a US address. And even though my projects with UAV drones was something that the glass was going to be used for, and that it was of interest. Because I am living in New Zealand they could not approve it. Thats all good, and understandable. BUT! After looking deeper into Glass I found out a few things. For one. Its a bluetooth extention of your phone. The camera and VR tech actually all comes from your phone. You have a limit of options you can choose from in the HUD of the glass, and other then the GPS map and the take a photo or take a picture option via voice command you are very limited.
I am starting to understand the privacy concerns with it because other then recording from the FPV and uploading to the program, there isnt much more you can do. The fact that it has to teather to your phone to function makes the $1200.00 price tag a bit much. Glass has a long way to go, before it can be really useful (Being a developer my self.) in a consumer way.
They want to keep the first run in the USA so they can keep the tech behind the HUD "in house" so to speek. Once it gets out of the USA you can bet that clones from China will be knocking on the Ebay door really fast. So right there you know the Bluetooth link and using voice commands to operate what you see is really basic.
I do the same thing now with my Plantronics blue tooth headset. And I dare say my personal VR software for my development lab, really puts Google voice recognition to shame.
So the short end of the long is this. Wait. Wait for Google to really advance this prototype because I think they are on the right track, but until you can really add to its abilities its just nothing more then a glorified bluetooth with some small graphics.