Also browser fingerprinting, as a way to prevent people from resetting things by clearing cookies and/or maintaining separate profiles.
Third-party cookies, as a naive identifier on their own, are comparatively straightforward and controllable. It's all the other tricks around them that make it worrisome.
Third-party cookies, as a naive identifier on their own, are comparatively straightforward and controllable. It's all the other tricks around them that make it worrisome.