One cookie, only if you sign in, and nothing goes to a third party. Signing in sets a cookie holding a random token, so the site knows it is still you. Without an account no cookie is set at all. The shop also counts how many times each product is opened and added to a cart — a number per product, with no visitor identifier attached. Previews and images are drawn and served from this site. We are recording your choice now so that if anything beyond those counts or marketing are ever switched on, they start off for you. What we store.