Examples of Devices Used for Head Tracking Recently, Kinect and Vive trackers are the most popular methods. But not everyone has the equipment for tracking.
Appendix: Identity of the Added Board This is the background area displayed on the screen. Depending on the setting, it may looks black, but it can be displayed in the actual color later. CG is placed between the virtual camera and this board to create the content.
Adjusting the Viewpoint of Scene (4/4) Alt + Drag to rotate view The orientation of the center axis of the board should be this Position of the viewpoint (virtual camera)