One of the great benefits of moving to SceneKit in version 10 was the ability to support emerging virtual reality technologies. As of v10.2, tappr.tv supports both Google Cardboard for 3DoF viewing, as well as Occipital Bridge for 6DoF
What are DoF? It stands for "degrees of freedom" and means, how can you move within a space
3DoF means you can look around in a virtual space: look left/right, up/down, and tilt side to side. Google Cardboard VR headsets and viewers are basically relying on the gyroscope in your smartphone to calculate how you turn your head, and adjust the 3D display accordingly.
6DoF means that you can look and move in all three dimensions: move left/right, up/down, and forward/back. Occipital Bridge does this by combining sensor data from the iPhone's gyroscope and camera with its own laser depth sensor to calculate, in realtime, how you head turns and moves within a scanned space.
Here's a teaser of what tappr.tv looks like inside a Bridge MR headset