Thẻ: https://www.casino.org/blog/avoid-getting-cheated-with-marked-cards/

If you’re a regular at the casino, chances are you’ve heard of the infamous marked cards scam. This is when unscrupulous players or dealers use special markings on playing cards to gain an unfair advantage over other players. It’s a clever trick that can easily go unnoticed, but can cost unsuspecting players thousands of dollars. […]