AR glasses or your smart device generates a live image with its integrated camera and fills it directly (in real time) with digital information fitting the perspective. This digital information could be e.g. images, text, videos or 3D objects with which you can interact. Mostly they are related to location (Location Based Services) or objects (Beacons/ QR Codes).
The media experience works with a software or app which has to be installed on the glasses, tablet or smartphone. The augmented reality experience could be already saved on the device or be accessed over a WLAN connection.