If you want to buy the latest movies digitally, where do you go? There are countless storefronts to consider, including iTunes, Google Play and Blinkbox Movies. But Sky has a simple reason to choose its 'Buy & Keep' service over the others: purchase a movie from us, and we'll throw in the DVD too. Before the offer was only available to Sky TV customers, but now anyone can use Buy & Keep through Sky Store. You can order movies through skystore.com or the Sky Store apps, before watching them on a mobile device, or Roku, YouView, Now TV or Sky+ HD box. Four devices can be registered to a single account and two devices can stream the same movie simultaneously -- useful if you watch a lot of movies on the go. A new "follow me" feature means you can also pause a film on your smartphone or tablet and pick up where you left off on your big-screen TV.