The latest buzzword creeping in is ‘Augmented Reality’. Basically it means that you will be able to point your mobile device at people and places and gain information about them as you walk along. So you could be walking down the street and be able to pick up reviews of the restaurant you might be thinking of visiting. Or else you might get information on a house for sale, or directions on how to get out of the tube, or pick up a shared presentation about a particular company.
There are a couple of videos here which will bring the concept to life. It is probably worth watching them so you know where mobile technology is heading.