[BadBadJellyBean]

Why is opt in "basically impossible". That is the definition of consent. Ask BEFORE you do something. It might sound strange but most people really don't want their data gathered by everyone.

[CalRobert]

I agree!!

To be clear, if you ask for consent in a way that is actually legal, almost nobody will actually consent.

[BadBadJellyBean]

True. I mean why would anyone want to give away their data.