thank for your answer, jetrii
correct me if i am wrong
so basically, eye toy is also the device to detect the LED light coming out of both wands
but for the wii, the camera (or detector) is actually built inside of the Wiimote, and the light coming out of the sensor bar
does it mean using wiimote is more suitable to play games with a group of people, because each Wiimote detects the same light source
but for eyetoy/wand, each player has to hold a wand with LED light that has different wavelength
is that right?
Sony claimed 1:1 motion capture so I am going to believe them. If they can do it for 1 wand, I don't see why it would be a problem for 4 wands.
Good news Everyone!
I've invented a device which makes you read this in your head, in my voice!