Amazon.com's (NASDAQ:AMZN) business model has drastically evolved since its inception. The company went from selling books to selling "everything" to offering web services, and now leader Jeff Bezos appears to be keen on getting in on the payments space. Amazon is reportedly working on a product that allows retailers to use a Kindle-based checkout system.

In this segment of The Motley Fool's financials-focused show, Where the Money Is, financial analysts Matt Koppenheffer and David Hanson discuss what this could mean for Amazon, as well as the other players in the payment's space like eBay's (NASDAQ:EBAY) PayPal, Square, and even MasterCard (NYSE:MA) and Visa (NYSE:V).