In my country, there is an exchange which I use, which gives me a call about once a year. They ask the same questions, I always give them the same answers, which are generic or vague. If they need something specific, I also have an answer for that as well.

The truth is they will never really know, but at least I keep them satisfied so they don't fry my accounts.

I think the trick is not that you are invisible or anonymous, but something along hiding in plain sight, and below the radar.