Spotify chief executive Daniel Ek has apologised following anger over the music streaming service's new data privacy policy. Some users said they were leaving the music service over changes in its terms and conditions that included access to pictures, contact phone numbers and sensor data stored on the user's smartphone. Mr Ek apologised in a blogpost for the "confusion" the changes had created. He promised an "update" to the new policy in order to clarify it but did not suggest that the terms themselves would be changed.