title: Swift 3 - Retreive location at all times
body: <p>I have an app that is used for tracking van drivers. I need to be able to get the location (x&amp;y) every 30 seconds or so. I have a method and a timer that allows me to do this.</p>
  
  <p>I was wondering how (if at all possible) I can have this working regardless of whether the app is active or not?</p>