Unlike Nintendo's solution, which uses one point of detection, the Gametrak uses two sensor bars that sit on opposite sides of the TV. Up to four wireless Gametrak's will work with the sensors. PDP claims that the added sensor in conjunction with the Gametrak's motion sensing technologies give the Gametrak accuracy to within 2mm of movement.
We got to briefly try out the Gametrak Freedom with Squeeballs, a game that PDP will bundle with the controller. Squeeballs is basically a variety/party game like Warioware, with elements of Cooking Mama thrown in for good measure. The controller certainly felt accurate, and we didn't find it overly sensitive. Moving laterally while rotating the controller to twist onscreen objects actually worked without a super jittery feel. PDP says we should expect the controller out in the fall bundled with Squeeballs for about $70 to $75.