Great ! Man walks in the virtual world with Vive HTC controls, is that right?

Greetings everyone !
In this demonstrative video of the hand control of the live, we see a man moving in the walking environment, just as happens simultaneously in the UE4, can tell me if this shift in the virtual world is happening because the sensors of the live are detecting the displacement of the control in physical space or is the man turning the controller like a joestick to go forward?

High-End Virtual Reality for Real Estate - Full - YouTube

Yes, it is detecting him walking around in room scale. He is also using the teleport mechanic. Do you not have a Vive?