Amazon has been working for years to try to take advantage of its massive database of customer payment information. One way it has attempted to do this is by pitching other commerce sites on the idea of letting their customers buy products and services from them using payment and shipping information the customers have stored with Amazon. Amazon, in turn, takes a fee on each of those purchases. It has also pitched a product that allows other online businesses to keep a digital record of who visits their site by letting those visitors use their log-in information from Amazon to sign in rather than having to fill out an annoying amount of new information. Amazon eventually combined the two products into one, called Login and Pay With Amazon, which it launched last fall. While Amazon says it has thousands of sites using the product, the Gogo inflight Internet service is one of the few big names on the customer list.

http://recode.net/2014/04/12/jeff-bezos-to-amazon-payments-team-go-faster/