It is controlled by moving the android G1, the directions are calculated from the accelerometer inside the android G1. So you G1 is just like your Wiimote now. Moreover, there is a camera on the blimp, so you can see the video streaming from the blimp in real time also. It is a really cool project. I hope I can play with blimp too! May be later, you all may see my blimp project:) Cheers.