Sunglasses – What purpose do they serve?

They protect your eyes? – correct!
They add to their style? – correct!

What if I tell you they can tell you who the person, you looking at, is?
How many common friend do you both share on a social networking site?
Entertainment, games and lot more – GOOGLE will bring this to you with GOOGLE Glasses.

Later this year, Google is expected to start selling eyeglasses that will project information, entertainment and, this being a Google product, advertisements onto the lenses.
The glasses are not being designed to be worn constantly — although Google engineers expect some users will wear them a lot — but will be more like smartphones, used when needed, with the lenses serving as a kind of see-through computer monitor.

The glasses will use the same Android software that powers Android smartphones and tablets. Like smartphones and tablets, the glasses will be equipped with GPS and motion sensors. They will also contain a camera and audio inputs and outputs.

the location information was a major feature of the glasses. Through the built-in camera on the glasses, Google will be able to stream images to its rack computers and return augmented reality information to the person wearing them. For instance, a person looking at a landmark could see detailed historical information and comments about it left by friends. If facial recognition software becomes accurate enough, the glasses could remind a wearer of when and how he met the vaguely familiar person standing in front of him at a party.
They might also be used for virtual reality games that use the real world as the playground.

When someone is meeting a person for the first time, for example, Google could hypothetically match the person’s face and tell people how many friends they share in common on social networks.

Source : Newyork Times