> Unlike Chrome, Firefox will apparently not send data about what you purchase back to Mozilla. It sounds like something has been lost in translation. If not,

> Unlike Chrome, Firefox will apparently not send data about what you purchase back to Mozilla. It sounds like something has been lost in translation. If not, Marcos is conflating two very different things. If you use Payment Request in Chrome with Google Wallet or Android Pay then yes, Google is going to have a description of what you bought and where you bought it. But you used their payment service. This is no different to what PayPal or a dozen other payment services are doing. If you use Payment Request in Chrome as a replacement for auto-fill - that is, you're just using it with regular card numbers, or with another non-Google payment instrument then nothing is being sent back to Google. Go check the source code, it's all implemented in Chromium (indeed, other Chrome based browsers that integrated Payment Request like Samsung's own mobile browser or AliPay are using Google's implementation). The reason that the standard asks for a description of what you bought is that it's useful to display to the user in a standardized way as part of the payment process so you can reconfirm exactly what it is you're paying for. I sat on the Payment Request Working Group until about three months ago and I didn't hear any of these concerns from Mozilla then. I don't really know what Marcos has been saying, and since the talk itself isn't online I'm going to assume he's been mis-quoted.