The game, as in the result? They track your total spend only? Is the technology there that they could track your playing habits and adjust the machines behaviour accordingly?
For example, if you are chasing bonuses, or likely to bet a certain amount and then follow it up with a further amount prior to quitting, can they track these behaviours? I became very suspicious of my players cards towards the end and stopped using them. Mind you, I did not know about the possibility of getting room charges comped or I may have continued to take my chances!
Obviously shop loyalty cards are able to tailor discount coupons to the products you buy... I know these things are possible, but I'm thinking on this scale it would be a massive scandal if it were in place.
No big drama, just curious!