It seems to be possible to play to (my) Sonos Setup without beeing physically accessing my WiFi nor being near to my home. So to make clear: I´m sure about that nobody externally is stearing Sonos via SONOS App.
What I found out is that If you ever been connected to someones Sonos Speakers with Spotify (e.g. in a friends house and with the permission accessing the Wifi) you are able to play music on this Sonos from any point the world / internet. Is that correct? How could I limit this access to sonos. Or is there a way how to make visible who is playing music actually?