Amazon Paycode is a half bad half good rip off of a brazilian type of payment system called boleto, no QR codes though, just a line of numbers (or a printed paper) that you take to any bank and some random licensed business to pay with money or credit card for whatever you are buying online.<br>The good side of it is that because they last for 3 days you can reserve products if you don't have money right now but are getting some income between those 3 days. I  think amazon can do it much better though, their version must be a very basic alpha phase of it.