Tougher measures on how people’s data is used to track advertising are coming. That means more acute scrutiny of the use of cookies — the prime method of ad tracking. For all the advertising industry’s gesticulation about the cookie’s demise and the rise of people-based audience planning that is ID- rather than cookie-based, online advertising still relies heavily on cookies for tracking.
The laws on cookie use are likely to get much tighter due to the new ePrivacy law, so it’s worth brushing up on what each cookie type does and, more important, which will be acceptable under the new law if it’s passed. To give a rough idea of how much websites rely on cookie data, we’ve selected some of the biggest U.K. publishers and checked how many third-party cookies they’ll need explicit consent to use if the ePrivacy law redraft passes, which appears likely. The Daily Mail has 19,136 third-party cookies on its site, and The Telegraph has 14,025, according to data from Cookiepedia.
https://digiday.com/media/know-cookies-guide-internet-ad-trackers/