Thank you Stan, that is another great example for a good, honest purpose use case (at this point I don't know if you or somebody else implemented anything but anyway ...).
I'm working as an IT consultant in data privacy and IT security I already have many use cases in my head and soon I'll post some of them here, as I can.
My comment on this and I hope it helps: as I quickly scrolled thru the article the first point which cough my eyes was "game token!" - and I know what you mean with this but it was a little bit confusing - regarding to the real message and purpose which was clear after reading... BW