US Patent 10055108 Location based playback system control

An example implementation may involve a device of a multi-zone media playback system displaying a control interface that is associated with a first zone of the media playback system, where the media playback system further includes a second zone. The implementation may also involve the device determining that it is outside of a threshold proximity to the first zone. The method may further involve displaying (i) an indication that the first zone is under control of the device, and (ii) an indication that the device is outside of the threshold proximity to the first zone.