Google is running a sweet promotion to entice Nexus owners to give its mobile payment system, Android Pay a shot, as it will be offering a $20 Best Buy e-gift card for those who use the service before December 31. To be eligible for the promotion, you'll need to use Android Pay on a Nexus phone, like the Nexus 5X, Nexus 6 or Nexus 6P, or with a tablet like the Nexus 7 or Nexus 9.

Once you add a card, all you need to do is head to one of the million locations that accept Android Pay, use it to pay for your purchase, and that's it. You don't need to shop at Best Buy in order to get the card, you'll get it as long as you shop at any location that accepts Android Pay. Google will add the $20 Best Buy e-gift card to your account within a few days, and then you have it to spend. Remember, you'll need to use Android Pay before December 31 to participate.

Source: Google