The 'Occipital Bridge' is a VR headset that offers impressive mixed reality immersion without the need for any external hardware. The headset, which is driven by the iPhone 6, 6S, or 7, is able to provide mixed reality while eschewing beacons or external cameras, which other systems have needed in order to function effectively.
In VR parlance, mixed reality is a virtual world in which the user's movements cause their first person perspective to move as well. As opposed to pure VR, in which the camera angle moves even while the user is sitting still, the only way to move in mixed reality is to actually move in real life.
The Occipital Bridge allows users to move through the virtual world without bumping into anything through the use of an internal camera that keeps track of the actual surrounding environment.