Amazon has announced a new program that will allow customers to login with their Amazon accounts to make purchases on third-party websites. “Login and Pay with Amazon”, which was revealed at Money2020, uses the OAuth 2.0 protocol and will work across tablet, mobile and desktop. With more than 215 million customer accounts, Amazon boasts a sizable user base that should appeal to merchants. The company expects to launch its first login and pay partnerships later this year. Merchants will pay a per transaction fee of 2.9% + $0.30 for Amazon Payments, with no extra fees for monthly use, setup, cancellation, refunds and fraud protection. Your credit card details won’t have to change hands, and Amazon will offer the same A-to-z purchase guarantee that is in effect on its own site.