This idea was tried before, but for just a subset of the population, though: https://en.wikipedia.org/wiki/Nazi_concentration_camp_badge
Like it or not we all have piles of metadata that follow us around. A big one is our face. It won't take long for facial recognition to do the same thing I mentioned in the previous post; except you won't have a choice then. Hell, you won't even know.
The metadata badge idea was of course not serious; but it doesn't seem so farfetched to me or absolutely terrible. It (as I proposed it), at least, would be something you controlled.
Which, unlike state IDs, licenses or Nazi' camp badges are not something you would control.
I do not appreciate the extreme association with a free-thought idea to that of the worst massacre in history. I'll assume you meant no harm, but still - I figured I had to at least express clarification.
Perhaps a small badge with visual friendly metadata would be handy. Not that we need to give them more information of course, just thinking out loud. The idea of everyone walking around with a little badge on their chest containing their metadata is oddly dystopian haha.