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How is this being implemented? A Whole Foods card tied to Amazon, Amazon Credit Card or an app. In other words how do they know in Whole Foods who has Prime?

• matwood 8y ago
  You have to get the WF app and scan it at checkout. The app has a 'sign in with your amazon account' button.
• j0hnml 8y ago
  You sign-in to your Amazon account via the Whole Foods app and scan a barcode at checkout.