This is a very meh article but it might be interesting enough for here.
https://www.ocregister.com/2021/03/1...ng-at-casinos/
I don't think the no cash thing will ever take off. Not entirely sure but I can't see why people would want that. I see places getting away from cash because then you only have to worry about employees stealing ingredients lol. My guess is it would only be an additional feature. I guess it would add to one's safety in terms of losing their cash or winnings via robbery or what not.