Augmented Reality - What are the 3 types of augmented reality?

Various forms of Augmented Reality exist: marker-based augmented reality, which triggers the display of virtual information via separate markers; Tracking pictures using augmented reality, which can identify visual content and superimpose digital information on top of it; AR experiences that are location-based use global positioning systems (GPS); AR experiences that are surface-detection, sometimes called world tracking or SLAM, enable virtual objects to interact with the physical environment.