Honestly had to search for it like teabwoi, I've never knew it had that name.
It's a very interesting concept to further augment virtual reality games. Transferring movement of the lower body, in a practical manner, to virtual reality has been pretty troublesome.
Pretty amazing what's been showing up on the subject, I can only imagine what we'll have on a very near future.
Sadly I haven't tried it yet. One day...