https://uploadvr.com/ekto-one-vr-boots/ 
Thoughts on this?
They're pretty smart. Much cheaper than the threadmills I think as well. If they can reduce the price of this enough it'll be amazing. And if they can guarantee that the weight and balancing will be placed to a minimum (don't want falling down with this). They need a really good tracking and machine learned algorithm
 for this to work