Those players who know how to count cards in blackjack are not welcome at the casino.
If you play for big bucks and win, you will become suspicious of employees, and they will watch your game.
If they find you counting cards, they will put you out of the table, talk to you and set a limit for your bets.
If you disagree, staff will kick you out of the casino, and they will confiscate your winnings.
So if you plan to count cards, bet less amounts and play discreet.
See what happens if you are caught counting cards in the casino.