I need to control cookies on our website so a panel appeares asking if the user accepts to our terms for dropping cookies on their PC. This is fine but the problem is we use third party websites for sections in our website. I understand they will have to develop a similar tool to my website to comply with the new law but I don't want the user to have to agree to the use of cookies on each site (it makes it very frustrating for the customer). I'm trying to make it so that a user clicks accept on our website and then doesn't have to do the same for the third party websites based on some shared variable.
My question is what methods or options can I use to achieve this? I tried using cookies ( if the user accepts) but cookies can only be read by their own domain so this is ruled out.
Thanks