The YouTube clip below explains all:
Take a look at the ProFORMA: Probabilistic Feature-based On-line Rapid Model Acquisition page for more information, they also have a paper online on the subject which is well worth a read.
Thanks to everyone who sent this in, our broadband is being sorted so the posts will be back to normal soon...
Update - Engadget has just reported that Qi plans to release a Linux-based demo to the general public, and a Windows version shortly thereafter. - Update.