Track IR used to work perfectly fine with DayZ, but with the most recent stable update (0.53) I have been unable to get the TrackIR software to recognize that I have launched a supported game and the device is not in the device list within DayZ. The headtracking does not work.
In older versions, when the head tracker would work, the TrackIR software would indicate that Arma 2 was the game it was detecting. Since today's patch, the "Current Game" indicator stays at "None" when I launch DayZ and the device is no longer listed in the recognized devices in the configuration list.