The Guardian in VR refers to a feature of some VR systems that allows the user to set up a virtual boundary or “play area” within their physical space. The Guardian system uses the VR headset’s cameras or other tracking sensors to detect when the user is approaching the boundary of the play area, and will display a virtual barrier to alert the user that they are approaching the edge of the safe space. This feature is designed to prevent users from accidentally bumping into walls or other objects while using the VR headset, and to create a more immersive experience by allowing users to move freely within a defined area. Some VR system have a feature called the chaperone, which is similar to the Guardian system, with the main difference being that the chaperone is typically displayed in the VR environment itself, while the Guardian is typically displayed as a boundary or grid in the real world.
