What can you do with Google Glass? If you already own a pair, you can run through a list of specific features and functions you've taken advantage of since getting the device. If you don't own a pair, then your answer is probably going to resemble something akin to Preview. This glassware is the kind all of us thought up back when Google Glass first appeared.

People with Preview installed can view movie trailers on Google Glass just by looking at a poster.

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