RETRIEVING PAYMENT INFORMATION FOR A USER FROM AN AUTHENTICATION SERVER FOR USE IN PURCHASE REQUESTS TO VENDORS

摘要

A payment system receives a purchase request from a client device identifying products or services from a vendor. An authentication server stories payment information in association with various device identifiers. The payment system obtains a device identifier associated with the client device and transmits a request to the authentication server, which determines whether payment information associated with the device identifier is stored. If the authentication server stores payment information associated with the device identifier, the authentication sever transmits a confirmation to the payment system. The payment system sends a payment confirmation to a vendor system associated with the vendor in response to receiving the confirmation. Additionally, the payment system sends a purchase confirmation to the client device in response to receiving the confirmation.