Summary
In this chapter we introduced you to the first popular methods of mobile AR: GPS and sensor-based Augmented Reality. We introduced the basic building blocks of tracking the device location in a global reference frame, dynamically determining the device orientation, improving the robustness of orientation tracking, and finally using the popular Google Places API to retrieve information about POIs around the user which can then be integrated into the AR view.
In the next chapter we will introduce you to the second popular way of realizing mobile AR: computer vision-based Augmented Reality.
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