Hud glasses are glasses Google is currently working on to be released later in the year. According to New York Times, the glasses are set to be released late this year with a price ranging from $250-$600 dollars. These glasses will act as a Smartphone and will include 3G or 4G connection, camera, GPS, motion sensors all running on an integrated Android OS.
The glasses will look like just the ordinary sun glasses but will have an earpiece so that one can be able to communicate with it. The glass will also act like an LCD screen through which messages can be read. It will be amazing how the designers will be able to integrate the transparency needed to see through it and the opacity to be able to read text on it.