This is getting interesting. We have seen many hacks on Microsoft Kinect. Most of them are for games or teleconferencing. Now, this wi-GO is a project that I think will really help the disabled.
This project by a guy named Luis de Matos is a very good start for people to evaluate the possibility of making it a reality. I guess it can even be for normal people. Add avoidance system, this system can really make your shopping a breeze.