Currently, with Google location, you can turn on location history and track your travels. It tells me I have traveled over 65,000,000 meters since I started the service. The image below shows what I was doing 1 year ago. By default, this option is disabled for users.
Because the government and companies benefit greatly by getting this information they will help pay for the glasses to help you buy them. There have already been discussions that the internet may join the ranks of indispensable human rights. The U.N. has already declared that it is a basic right in 2011 as countries continually tried to limit the content available to their denizens. Depending on the direction those debates take, the government could then be justified in passing legislation that would ensure no citizen is denied this right. It would be great political theater as one side touts the endless value added to citizens' lives and the other crucifies such policies as a new level of government intervention and invasion of privacy. No, it would not only be the government. Companies will also be peddling their goods with all the latest features. Want the latest model, $200 with contract. Wait a few months and get it free with contract. It is free, right?
Google Glasses: ‘Spec’ulation 3-Back to the Brick: A Sales Pitch for the Coming Years