Android Pay is also being baked into the UK Uber app. As an extra incentive, Google is offering a £5 discount if you use its service to pay for rides this Christmas. The deal is valid for 10 journeys and expires on December 31st, so you'll need to act fast if you want to save some money on travel. Finally, Google is pushing a Christmas promotion called "shop, tap, reward" which gives you a virtual cracker after every purchase. Pull them apart and you might win one of 100,000 gift cards. A shallow ploy to earn your patronage and long-term adoption? Absolutely, but hey -- there's nothing to stop you from abandoning the app once the festivities are over.