This has been open source for quite some time now. This is probably what inspired the latest Microsoft Research demo http://research.microsoft.com/apps/video/?

This has been open source for quite some time now. This is probably what inspired the latest Microsoft Research demo http://research.microsoft.com/apps/video/?id=160684 http://research.microsoft.com/apps/video/?id=160684 For those who don't know, Pranav Mistry worked in MS as a UX researcher.