Changes

Positional tracking VR technology is a necessity for VR to work properly since an accurate representation of objects like the head or the hands in the virtual world contribute towards achieving immersion and a greater sense of presence <ref name=”2”></ref> <ref name=”3”></ref> <ref name=”4”></ref> <ref name=”5”> RealVision. The dilemma of positional tracking in cinematic vr films. Retrieved from http://realvision.ae/blog/2016/06/the-dilemma-of-positional-tracking-in-cinematic-vr-films/</ref>.

[[File:HMD and markers.png|thumb|1. Markers on an HMD (Image: www.roadtovr.com)]]