Recently I build an Oculus Rift like low cost alternative to simulate the original device.
I have a smartphone with hd screen and find on Amazon an interesting kit (2 lens, 1 strap). So, I build a lego structure to bring together this elements, and wrote a small ios app that show two view, one for eye.
The gyro and accelerometer sensor make possibile to track the head movement, so the last ingredient was to find an app that show multiple 3d view based on sensors.
I not find the app, so I wrote a small ios app that show 2 streeview frame, rotating the view point based on sensors. The result is simple and awfull 🙂