Technologically, why should that be a big challenge? In the simplest model, the HTML would require a privacy tag/flag that would need to be matched against an i

Technologically, why should that be a big challenge? In the simplest model, the HTML would require a privacy tag/flag that would need to be matched against an incoming HTTPS request's attribute. If done right, it might actually be seamless, much unlike the GDPR pop-up which needs to be manually cleared.