Question: Is the Sonos thing that you can walk around your house streaming playing whatever on your phone and the speakers know where you are and automagically

Question: Is the Sonos thing that you can walk around your house streaming playing whatever on your phone and the speakers know where you are and automagically turn on, connect, and play the sound? Start listening to something in the bedroom, head downstairs for breakfast, bedroom speakers switch off as kitchen speakers take over? Is that it?