I had a chance to see the surgical navigation using the electromagnetic technology in order to locate each small part of instruments very precisely (it can even give to 1 mm and 1 degree accuracy), but they work in a very limited environment. This type of surgical technology is invented for the minimally invasive surgery (MIS). Can anyone help me out on how it work if we would like to use it w/ our robot? As I mentioned... it's 1 mm/1 degree accurate, i don't think precision machining using this technology is a big deal at all! Besides, although all the instruments connected by wires, they react hard-core realtime.