I need a PIN code on the paid services in the Sonos S2 app. When I'm not at home, listening to my Spotify music and someone's at my home using my app to listen to music on my Sonos system, my Spotify music pauses because the Spotify license only allows one playback at a time. Very unpleasant! A simple PIN code for using the services (like Spotify) or log in using the Sonos credentials to use the connected services would solve this problem. But no, am I the only one with this problem?