I've been using Spotify for quite a long time now. I have a family plan premium membership. the issue is that none of the accounts related to my plan are using my account without my knowledge. It was fine until a strange playlist appeared on my list, something I did not create. So I went to my account settings, changed my password and disconnected from all the devices linked. My Idea is to track where these devices are, so I could recognize them, or not.