As someone who has done this exact behavior I strongly suggest that you try not to do it. And that you talk with your T about your urges intermediately. I have done with both professors and therapists. It is very much an invasion of that person's privacy, and it wont do anything to help you meet the unmet needs that are compelling you to do this. This kind of thing can lead to all out stalking if you are not careful. It is truly a miserable experience. Please try and stop yourself.