I'm waiting for you guys to implement a separate "screen" or "application" on all slots, which is a cryptocurrency or Forex or CFD (or even pretend "securities") client hooking up to the casinos' central exchange system, and the casino takes no positions long or short but just charges a very small % tx fee on each transaction. If it's cryptocurrency, then have 1:1 conversion between cryptocurrency and the various chip species each representing said currency (like Doge chips, Litecoin chips, Bitcoin chips, Ethereum chips, etc) so the incentive to trade on the slots is that the player can then gamble the objects of trade directly. The keys (or casino crypto exchange authentication data) can be stored on smart card and can be carried around by the gambler. Then it's a matter of having various slots and tables which accept these other cryptos in addition to their existing dollar variants. It's like having Euro machines and tables, Renminbi machines and tables, etc.