[davidy123]

> Except you know that bars, etc. are going to ask for more details, including full name, address etc. And they'll say it's needed to prevent known hooligans and troublemakers.

I wouldn't expect this at all. Being visually recorded, maybe. I'd hope governments step in and prevent creating private databases around that.

I absolutely disagree that coherent data means people provide anything asked for.

You are more than making up for my "can" with your suppositions.

Cookies &c are examples of tech that got away without regulation when it was needed. This is regulation. It's needed.