The folks at PhoneArena put together a handy-dandy breakdown of everything you need to know about Android Pay. The most useful part of their analysis is their list of retailers and banks that the service is currently compatible with.
Here's a list of banks, and you can see the retailers listed in the image above,
- American Express
- Bank of America
- Capital One (Coming Soon)
- Citibank
- Discover
- Navy Federal Credit Union
- PNC
- Regions
- USAA
- U.S. Bank
- Wells Fargo
For their full write-up, here's the link://www.phonearena.com/news/All-you-need-to-know-about-Android-Pay-compatible-devices-availability-safety-features-and-more_id74988#vptcEQTCGuL3y01M.99
Here's a link to the Android Pay app on the Google Play Store: Android Pay - Android Apps on Google Play