Or how about Google making a form of Adsense that doesn't track users?
I somehow have a feeling that large corporations intentionally are trying to make this law ridiculous. E.g. why blogspot pages would need such warnings? Please Google just stop tracking.
Actually I can't even imagine handing cash directly to someone - this kind of seems rude to me. It would be even worse if the note was folded. Doing this also might involve hand contact (which again might make someone uncomfortable). (I'm from Northern Europe).
And there are a lot of ways to track users even without cookies.