We have finished the first experimental version of position tracking correction algorithm, that means if the IMU is drifted (yes, unfortunately we had IMU drifting issue) in any direction our correction software can recognize the drift and correct it. The algorithm doesn't use any extra hardware so we can send it out as a software update to all of our devices already shipped.
*IMU (Inertial Measurement Unit) is our position tracker
Here you can see the algorithm in action. We set the center by 45 degree to the right and the algorytm correct it after a few seconds (we use here random movement for the simulation)