Since our launch this Fall, we’ve seen millions of people set up Android Pay, and the vast majority of them are using tap and pay with their Android devices for the first time. There are now over 1 million locations across the United States that already accept tap and pay, with more being added every day. In short, the response from customers and merchants has been tremendous.
Now we’re ready for the next step: We’re working to bring Android Pay’s simplicity and security to purchases within apps, and to people in more countries around the world.
Source: Android Blog