VR sickness ?
As for motion sickness, VR sickness occurs when your eyes and your inner ears get mismatching signals. The virtual moves on the screen diverges from the real moves of your head. That's how you start feeling queasy.
Boarding VAR® is an add-on device, ready to be built into any VR device. It brings to your peripheral vision inertial references that match your inner ear's perception. The sensorial conflict is then impossible : motion sickness is avoided !