I don't think that will be a problem, because there will never be such devices.
They are vapourware, solving a problem people don't have, won't have, and don't want to have.
Sure, Google might release them commercially at some point. Still, they will go the way of the yo-yo, the Sony dog robot, the MiniDisk and other novelties.
Only geeks (in the unpopular, nerdy meaning of the term) lust after a thing such as Google Glasses. They are a 100% guarantee that you won't even get laid, and for something that you wear on your head, that's the kiss of death.