[KG64_Cnopicilin]

The Wii sensor specs are not publicly available, Johnny Lee has quoted the API output which is interpolated data. TrackIR is 120fps @ 358X290, runs off USB power, is expensive, very responsive and runs hot. The Wii on the other hand runs on 2xAA batteries (for 30 hours while using sensor), is cheap, laggy and runs much cooler, also PixArt, the makers of the sensor, only seem to make 30fps sensors. Taking all this into consideration I would be very surprised if the Wii sensor is any more than 30fps @ 320x240; no better than a cheap webcam.

Pros:
Negligable cpu usage.
No IR filter removal required.
Sensor may be better than a 30fps webcam.
Readily available.

Cons:
More expensive than a cheap webcam.
Needs bluetooth dongle.
Batteries.
Attaching it to a monitor may be difficult.