PrimeSense reps also told me that the camera can "see" any number of people on the screen -- you can fit as many people in that camera as possible, and the computer will see all of them and can even recognize them as human shapes. But it can only run calculations on two people at a time, just because the processing power required to track all of the body's locations and movements is so great. During our testing with the device, a person moving in front of the camera was able to "steal focus," but the computer can also be told through gestures to keep focus on a certain person.