Google jumps into location check-in game

Google on Tuesday began letting smartphone users check into spots on the go as the Internet star jumped into the hot location-based services arena with Facebook, Foursquare and Gowalla.

Air Force warns troops about Facebook feature

(AP) -- The Air Force is warning its troops to be careful when using Facebook and other popular networking sites because some new features could show the enemy exactly where U.S. forces are located in war zones.

Augmented reality brings movie magic to city visits

(PhysOrg.com) -- From the Italy of Visconti to the Spain of Almodovar, many people's first encounter with a foreign country is in the cinema. Imagine if images from the silver screen could be conjured up anew when they do ...

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