In terms of what Ian is talking about, I think, an idiom in the U.S. that has been talked about for a number years is called “do not track”, which is a default setting. It basically says that for all this data collection that you.... Any time somebody goes to a website, data is being collected, whether you actively or passively provide it. Now the rule is basically an opt-out rule: you can opt out of it if you're given notice that it's happening. The converse is “do not track”, and really, that's the most protective rule—
On April 4th, 2017. See this statement in context.