This extension is not maintained anymore. Please use Amazon Pay (Checkout v2) instead.
Login with Amazon¶
Login with Amazon allows users to login to your shop using their Amazon user name and password. All available data needed for creating an account or placing an order in your Magento shop (including name, email address, and zip code) are fetched automatically from customer’s Amazon account.
Login with Amazon service requires you to have a valid Login and Pay with Amazon account (refer to the Amazon Pay and Login with Amazon account setup if you don’t have one yet), registered application for Login with Amazon service (refer to the Registering application for Login with Amazon service if you don’t have one yet) and Magento store with a valid SSL certificate installed and properly configured in your shop. By “installed and properly configured SSL certificate” it is meant that your webserver is configured to serve pages via HTTPS protocol, Base URL config option is set to the HTTPS-based URL and in section of Magento settings.