Degrees of Freedom

In virtual and extended reality, degrees of freedom refers to the number of independent movement axes available to a user within a virtual environment. Three degrees of freedom (3DoF) allows rotational head tracking only — looking up/down, left/right, and tilting — which is typical of 360-degree video experiences. Six degrees of freedom (6DoF) adds translational movement, allowing users to physically move forward/backward, left/right, and up/down within the space. The distinction is important for accessibility because it affects how assistive features like sign language interpreters and captions are rendered, and how users interact with guiding cues.