eli5 how do casinos determine if someone is counting cards?

Question

eli5 how do casinos determine if someone is counting cards?

In: 59

Answer 1

I suggest reading “bringing down the house”, an entertaining book that explains some card counting strategies. They made a movie, but some of the detail gets cut out.

As was already said, it’s the betting that gives you away. You could count the decks for days and never observe a meaningful statistical advantage. When it happens, you gotta bet table limits, it’s too obvious when someone goes from $5 bets to $500