title: iPhone - Backgrounding to poll for events
body: <p>For quite a while I'd been looking into a way in my iPhone app to poll every X minutes to check the data counters. After much reading of the Background Execution documentation and a few trial apps I'd dismissed this as impossible without abusing the background APIs.</p>
  
  <p>Last week I found this application which does exactly that. <a href="http://itunes.apple.com/us/app/dataman-real-time-data-usage/id393282873?mt=8" rel="noreferrer">http://itunes.apple.com/us/app/dataman-real-time-data-usage/id393282873?mt=8</a></p>
  
  <p>It runs in the background and keeps track of the count of Cellular/WiFi data you've used. I suspect that the developer is registering his app as tracking location changes but the location services icon isn't visible while the app is running, which I thought was a requirement.</p>
  
  <p>Does anyone have any clues as to how this can be accomplished? </p>