Them new slots

I've noticed from afar the move toward a "cashless society" for slot play. The progression has moved from mechanical slots to computer controlled physical wheels to full video. I just saw a girl return to her group exclaiming that she just won $20 and excitedly waving around a white paper receipt instead of a green bill. Then I passed a couple who just hit a payout complete with audio of the virtual coins that they won hitting the tray. I'm sure this stuff has been around a while but I just don't really dabble with those EV- beasts to know any better. Not there yet but getting closer to just being able to pop in your ATM card and having the casino take money directly out.