It is not, on its own, a workaround. Cookies are still separate, and any foolproof online correlation call must go through the browser and can be blocked. Not

It is not, on its own, a workaround. Cookies are still separate, and any foolproof online correlation call must go through the browser and can be blocked. Not going through the browser is possible but requires trust between organizations; publishers have an incentive to inflate numbers, and trust has so far been lacking (and rightly so). That may change.