ahem, the n900 is good, its damned good infact, but its not sending video over. the onedotzero identity is a 2 part application. the n900 portion takes user input and displays a slick ui to the user there and when the user selects an area the interactions change and allow the user to shake and tilt the device etc. the user input and sensor data is transmitted over the wifi. the massive heavyweight computers which are connected to the projectors take this input and produce the 3d ribbons. theres a lot that the n900 could do itself (similar effects could easily be achieved at n900 resolution using the powervr, or just look at the fluid motion on liqflow but in this specific instance its not, the identity was rendered at some ungodly resolution and presented on a massive display using 6 HD projectors. you watch the video yourself disclaimer, i am the author of the onedotzero n900 controller.