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Grant [Tobii]

Hi @leah, the origin point of the coordinate system to get TobiiAPI-HeadRotation (pitch yaw roll) is in fact not the centre of display screen but rather defined at the centre of the ‘track box’ that contains the user head, so hopefully this explains the values you are receiving.

Thanks for waiting whilst I track down the program for you… If you could kindly PM me with your personal email address, I will send along to you when ready. Thanks.

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