Hi @takashimatsuzawa and thanks for your query. Whilst you can disable the Tobii Service within Windows via the Service.msc tool, you can also run
net stop “Tobii Service” and this should stop all relevant Tobii Software running (not including game hub, gaze overlay, etc)
However, we do not generally recommend doing this as little resources should be consumed if the eye tracker is not connected.
Please try this out and let us know how you get on.