Tobii Eye Tracker

What is the Tobii Tracker?

On Windows, you can use a Tobii Eye Tracker 5 or 4C to improve your eye- and head-tracking data.

These are special trackers you can attach to the bottom of your screen. They don't do any facial feature tracking (like mouth, brows, etc.) but they can provide very accurate tracking of your head-position/rotation and eye-gaze-position on your screen.

You can set if up on the following screen, only shown on Windows:

How do I use it?

Make sure your Tobii eye-tracker is connected to your PC and works (outside of VTube Studio). To make sure that is the case, follow the setup guide provided by Tobii for the tracker, including installing all required drivers/software and properly calibrating the Tobii tracker.

What can I do with it in VTube Studio?

VTube Studio can use the Tobii tracker to improve the head-tracking and eye-tracking. Depending on the options you've turned on, it does the following:

• Overwrite iPhone/webcam head X/Y/Z position and rotation as long as the Tobii tracker detects the head.
  • This position/rotation is very smooth and accurate. Most importantly, it does NOT have that annoying head-nod when you blink.
• Overwrite iPhone/webcam eye X/Y as long as the Tobii tracker detects the eyes.
  • If this is turned on, VTube Studio will also make sure the eyes will never fully close as long as the Tobii-tracker still detects your eyes. This solves the problem of eyes closing when you look down, for example on your keyboard or drawing tablet. This works well because the Tobii tracker is below your screen and very accurate, so it will be able to tell if the eyes are still open.

You can also visualize the gaze position. This position will be shown as white bubble/circle in the VTube Studio window. The coordinates for the gaze circle are the X/Y gaze coordinates within the screen the tracker is installed on, so the shown position will only be accurate if VTube Studio is on that screen and in fullscreen mode.