For the location-based AR, the position of objects on the screen of smartphone is computed using the user's position and the direction in which the user is facing. The AR apps will know which way you're facing (by the compass) and, the orientation at which you're holding your phone (by accelerometer) and where all the points of interest are relative to your location ((by GPS or Wi-fi). Compared to object-based (marker or markerless) approach, the location-based AR applications do not demand much computing from smartphone processor on image processing and computer vision algorithms. As a result most of AR apps for tourism are location based, such as [10] [11], though we see more object recognition based apps being developed and released.