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?
That depends on what you are playing, if you are talking about games with a crosshair for aiming, that's how the Wiimote would work, otherwise, no. The Wiimote works on a completely different concept as a gaming device vs a camera detection systeam.