Presence

Presence is one of the most important aspects to a true virtual reality experience. To have an effective VR, The user has to feel that he or she is within the artificially created world. This is the only way to elicit emotions and involuntary, reflex-like reactions from the user.

To create Presence, the VR Device has to fool the user's senses, sight, sound, touch and smell. To create the presence, VR Devices utilize head tracking. The movement of the user's head changes his or her viewpoint based on the movement. The goal of the device is maintain your sense of presence and avoid breaking it.