[mindstab]

... This isn't some "punishment" this is how the internet works. If you opt out of being tracked and cookies... how would that be remembered? That is really a sign it's working. This is part of why this is such an amazingly defective law

[pgeorgi]

Some pages (eg. all that use the consent.truste.com script) use localStorage to store the decision. That way the decision remains client-side and can still be persistent by hiding the question via javascript.

[notok22]

This law applies to any kind of "data" stored on the client, so using localStorage to store the user's answer would be breaking the law. http://www.cookiepedia.co.uk/eu-cookie-law

[pgeorgi]

I don't remember the specifics. They could add a checkbox "store this decision locally", which would allow storing this single information - and localStorage is the best place to put it (unlike cookies).