There's no other hardware required. It's just hololens and magic leap (plus other devices like iPhone, laptop).
Hololens and Magic leap both have hand tracking, so the device knows if you are putting your hand up (and has some sense of its position and orientation), plus head pose.
"Sway" on device is actually more minimal that what you're seeing in the video.
Hololens and Magic leap both have hand tracking, so the device knows if you are putting your hand up (and has some sense of its position and orientation), plus head pose.
"Sway" on device is actually more minimal that what you're seeing in the video.