I've been looking into cookies and the use of a disclaimer message that pops up on a site ( or not).
Some want to take you offsite to say google if you dont accept cookies
Others are happy just to have warned you and allow you to keep browsing.
They use a cookie to allow the message to disappear if you click ok

I added one for a while then found this

www.cookielawinfo.com/

Strictly Necessary
You don’t need to get consent for all cookies, however. Cookies that are “strictly necessary” for the running of your website are excluded from the directive. The definition of “strictly necessary” is black and white though:

Cookies that are considered strictly necessary:

•Cookies to remember items in a shopping basket
•Cookies providing essential security measures
•Cookies used for quick loading and distribution of content
However, some common web services are NOT considered strictly necessary:

•Google Analytics, or similar software to analyse visitors
•Cookies that remember user preferences
•First and third party advertising cookies
•Facebook like buttons
Example: does WordPress use cookies?
WordPress is a very popular Content Management System, used to provide website content for over 15 million websites. It uses cookies for two purposes.

1.Registered members need a cookie to be able to log in. This is ‘strictly necessary’ as WordPress won’t work without it.
2.Visitors who leave a comment on a blog post will also have a cookie set on their computer. This is not “strictly necessary” as it’s a user preference.
Many WordPress website owners also use Google Analytics to track how their website is used. This is also not considered strictly necessary.

In an example like this, you will need to take action to ensure you comply with the EU Cookie Law.

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