[vec]

> If you're unable to set a consistent cookie across your user's many sessions (especially for a high retention business like e-commerce), or your javascript conversion events (Google Tag Manager for example) are being blocked, your user's historical behavior will be extremely difficult to stitch together over time.

Yes, that is in fact the point.

Look, I know there are strong financial incentives to build individual user profiles and doing it this way may not violate the letter of the law, but it sure as hell violates the spirit. If we ask a user if they're willing to be tracked and they do everything in their power to tell us no then I'm not sure how comfortable we should be doing it anyway.

[cedricd]

Yeah, this advice looks targeted to companies that benefit hugely from targeting their users.

If I'm reading correctly it's basically saying 'once a user has identified themselves to you, then you can go back and figure out the steps they took before that'

As a person, if a company knows what I did right before I bought their product (say in that session) I think I'm ok with that. If they follow me onto other websites or other devices then that feels a lot more invasive.