That would not be legally valid: you can't give a blanket consent for an unspecified party to do anything with your personal data. Also, as I mentioned in anot

That would not be legally valid: you can't give a blanket consent for an unspecified party to do anything with your personal data. Also, as I mentioned in another comment just now (https://news.ycombinator.com/item?id=21857843 https://news.ycombinator.com/item?id=21857843), the banner means they want to do something that you probably don't want, because that's why they have to ask consent. The banner is not needed for things like visitor counting, browsing products in a webshop, or other expected operations that involve personal data. It's only necessary when they do something that requires consent (see the link for an example).