Working: In order to superimpose virtual onto real content, the AR systems needs to be able to match the users viewing perspective onto the scenery and the virtual content that shall be shown. The recognition of space and objects placed in the scenery appears to be trivial and natural to a human being, but is a complex task for a computer system. In order to superimpose realistically virtual images on the view of the real world, AR systems rely on various tracking methods. Tracking allows for a constant determination of the position and orientation of parts of the AR system, the user and/or objects in the environment in relation to each other. Depending on the AR application the requirements for the tracking system differ significantly, but generally the tracking should have the following ideal characteristics: 1. Flawless and precise. 2. Robust. 3. Zero latency. 4. 6-Degrees of freedom. 5. Universally applicable. 6. Easy to deploy and use. 7. Affordable. It is possible to categorize t...