Popsci explains how this augmented reality app works:
...the user points the camera at a person across the room. Face recognition software creates a 3-D model of the person's mug and sends it across a server where it's matched with an identity in the database. A cloud server conducts the facial recognition since and sends back the subject's name as well as links to any social networking sites the person has provided access to.
Watch a video demonstration of the app below:
Via: HuffPost