Talking chips only and not the public money issues (which I would agree shouldn't be marked) The casino owns these checks and should be able to use secure means to protect them.

As far as tracking players, that's already done, cameras everywhere, cards, machines... it's their casino and their chip.

But mostly I'm writing to ask which reasons for casinos are dubious? I don't see them as numerous, and don't really see one?

Once again, I'd be against this being implanted in currency in general circulation. This is about the casino chips.