Oh my, one more video I cannot watch just because I am german and one more day of my life ruined by them :(
Observations from the video:
1) On the screen is a picture of the object, with a blue path representing the actual path of the router and a circle representing the fault tolerance of the system. Apparently, keep the path inside of the circle and you win.
2) The computer can move the router independently of its mount, within the tolerance represented by the onscreen circle.
3) It looks really easy to operate.
Hint: Use a (free) youtube proxy ...
Like this: http://www.ssyoutube.com/watch?v=-UmL7xZZSUk (remove the 'feature=player_embedded&' crap after copying the link to your url bar)
The great thing about this is: no extra software needed (though there is an extension and an bookmarklet) and it gives you links to all video resolutions. Proxtube didn't work for me when I tried it and most of the time I like to download the videos with a download manager, which speeds things up on my slow connection (though the Flash Player seems to have gotten faster on my netbook, both download and playback-wise.