` ` Augmented reality , '' a merger of the digital and virtual worlds , is new to phones . ` ` AR '' apps put messages -- like blog posts -- on top of live video captured by cameras . The GPS and GPS systems paved the way for the AR . Some say AR is in its infancy ; others question its usefulness .
`` Augmented reality , '' a merger of the digital and virtual worlds , is coming to phones . `` AR '' apps put info -- like Twitter posts -- on top of live video captured by phone . Smartphone GPS and compass systems paved the way for the advance . Some say AR is in its infancy ; others question its usefulness .