[MyMemoryfails]

I think the blog author is misinformed about the session id? If you use that for marketing purposes, you need cookie prompt. The GDRP says only necassary cookies, if you also reuse the login cookies for purposes. It's not longer necassary right?

Otherwise it'd be so blatant loophole, you can only use cookies for their intended purposes and not reuse for them other purposes. I remember some details when i needed a way to prioritize user traffic via cookies, since lots malicous traffic dont have cookie storage, as long i didnt retain the cookie ID used for load balancing, as all information would be lost on reboot of haproxy process. I didnt need cookie prompt, but if i also used that for other purposes like visitor tracking, then I'd need cookie prompt even before setting the cookie.

Im not lawyer, but thats how I understood.

[arnorhs]

Same thing I was thinking. I personally don't track unique visitors on my blog, just random sessions where you can't identify unique users, which allows me to not show a banner. If I were to use this technique I'd have to show a banner