[iuiujmfi787]

Good point. There would be a few details like this to work out, of course. My first suggestion would be to allow text-boxes to be pre-populated with form data (like QTY and SKU) subject to tight restrictions. (There would be no script code sniffing the user's fingerprint before the text boxes are populated with SKU data, for example.) So a web dev could still create a shopping page with Add-to-Cart buttons such that clicking the button tells the server the SKU and QTY added to cart for session SESSION_ID. And the user transparently observes exactly which sequence of Unicode codepoints is being transmitted to the server upon clicking the Add-to-Cart button.