> Cookies clearly exempt from consent according to the EU advisory body on data protection- WP29pdf include:

> user‑input cookies (session-id) such as first‑party cookies to keep track of the user's input when filling online forms, shopping carts, etc., for the duration of a session or persistent cookies limited to a few hours in some cases authentication cookies, to identify the user once he has logged in, for the duration of a session

> user‑centric security cookies, used to detect authentication abuses, for a limited persistent duration multimedia content player cookies, used to store technical data to play back video or audio content, for the duration of a session

> load‑balancing cookies, for the duration of session user‑interface customisation cookies such as language or font preferences, for the duration of a session (or slightly longer)

> third‑party social plug‑in content‑sharing cookies, for logged‑in members of a social network.