This developer from Infusion is showing off some of his modifications to Microsoft’s Surface at I Live To Code. The table has several cameras underneath instead of just one, so that he can affect the ripples and other interactions on the surface without touching it.
Perhaps the most interesting thing about the demo is the “new gesture” for tilting where he places the palm of his hand on one side of the screen and uses his forefinger and thumb to change the tilt angle. I’ve been trying to think what this is the equivalent too and it feels a bit like adjusting anything on a pedestal or tripod where you have to hold one part still to move the other. I’m not convinced it’s a gesture that is going to catch on because the palm-down hand blocks half the screen.
(Regarding the “Sponsored by Microsoft” link – this is experiment for Playpen too. It’s a sponsored clip by Unruly Media who have a pretty good ethics code. They encourage honest opinions and don’t try to be stealth marketers. I’m not entirely sure I want to have a great deal of sponsorship on Playpen, but the clip interested me anyway, so we’ll see. If you absolutely don’t want to give me an 18 cent kickback, you can watch it on YouTube)