Blinking is perceived as head movement

This is definitely not intended behavior and we are looking into possible solutions that will prevent blinking from being perceived as any kind of movement. We will update you when we know more and until then, try to avoid flirting with any potential viewers. 

For Tobii Eye Tracker 5 only

In our latest update 1.69 which is available for download on gaming.tobii.com, we have been able to improve this behavior. Please try it out and let us know if it improved things for you.