Is Counting Cards Illegal? Exploring Myths and Realities

Is Counting Cards Illegal? Exploring Myths and Realities
Card counting in blackjack is a technique shrouded in intrigue and misconception. By keeping track of the high and low cards dealt in the game, players can use this tactic to gain an advantage over the casino. Despite the aura of mystery that surrounds it, card counting is not the cloak-and-dagger activity many believe it to be.

Is counting cards illegal?

No, it is not. Federal or state laws do not expressly prohibit counting cards, which means that, technically, players can employ this strategy without breaking the law. However, this does not mean casinos welcome card counters with open arms.

As private properties, casinos set their own house rules and have the right to refuse service to anyone they suspect of card counting. This can lead to a variety of legal troubles for the card counter, including charges related to the use of electronic devices for counting, cheating, trespassing, and disorderly conduct.

A group of players enjoying a game of blackjack at a casino

The legality of card counting and the potential consequences of engaging in it at a casino present a complex landscape for players to navigate. While the technique itself is not against the law, the actions casinos might take against suspected card counters can lead to significant legal issues.

This article seeks to demystify card counting, explore its risks and rewards, and discuss the fine line between a legal gaming strategy and the potential for legal repercussions in the casino environment. Drawing on insights from various sources, including legal experts and casino authorities, we aim to provide a balanced perspective on card counting, challenging the myths and highlighting the realities of this controversial practice.

How Do Casinos Know If You’re Counting Cards?

Casinos employ a variety of strategies to identify card counters, blending human observation with advanced technology. Surveillance cameras in a casino setting with monitors displaying multiple blackjack tables

Observing Betting Patterns

Supervisors note how players adjust their bets, as card counters vary their bets based on the card count. Post-shuffle, counters often bet the minimum, lacking an edge initially. As the game progresses, counters increase their bets when the unplayed cards favor them. Unlike typical players, who maintain their bet after a tie, counters adjust their bets based on the count.

Analyzing Player Demeanor

Card counters may appear overly focused, avoiding casual conversations. Movements like lip-moving or intense observation of cards and the discard tray can signal counting. Lack of emotion after losing a significant bet or specific interactions with the dealer, such as tipping or ordering drinks, may be scrutinized.

Understanding Strategic Play

The decision to hit or stand on a hard 16 against a dealer’s 10 can reveal a counter’s strategy based on their current bet size. Counters might opt for insurance primarily when their count suggests a high likelihood of the dealer having blackjack.

Technological and Procedural Measures

Casinos utilize certain measures to identify known counters entering the casino. Experts may be called upon to analyze live or recorded gameplay to confirm skilled card counting. Photos of suspected counters are compared against a database of known individuals. casinos may deploy specialized staff to discreetly observe and confirm counting behaviors. Post-visit analysis can lead to barring confirmed counters.

Watching for Team Play

Surveillance personnel are vigilant for signs of team play, such as signaling or sudden table joins by large bettors, due to the significant financial risk well-coordinated teams pose.

Can You Get Kicked Out of a Vegas Casino for Counting Cards?

Yes, players caught counting cards can face expulsion from the casino, and in some cases, their details may be shared with other casinos, effectively banning them from playing at other venues as well. This policy is strictly enforced at Casino Vegas, ensuring fair play for all patrons.

A strategic group of players at a blackjack table

One of the most renowned examples of successful card counting is the story of the MIT Blackjack Team. This group of students and ex-students from the Massachusetts Institute of Technology, Harvard University, and other leading colleges used card counting techniques and team play to win millions of dollars from casinos around the globe. Their story has been popularized in books and films, highlighting the potential for card counting to tilt the odds in the player’s favor.

Why Do Casinos Hate Card Counters?

While card counting itself is not illegal, casinos are private properties and have the right to implement their own rules, including measures against card counters. Casinos justify these measures as necessary to maintain the house edge, which is essential for their business model.

The legality of these actions stems from the casinos’ rights as private entities to serve or refuse service to individuals based on their own policies, provided these policies do not discriminate on illegal grounds. This delicate balance between the legality of card counting and the rights of casinos to protect their interests creates a complex landscape for players who wish to employ this strategy.

Close-up of a blackjack dealer shuffling cards

What Happens If You Get Caught Counting Cards?

If you’re caught counting cards in a casino, you won’t face legal repercussions, as card counting is not illegal. However, casinos consider it cheating and take various measures to protect their profits. Here’s what typically happens:

  • Immediate Ejection: Casinos will often escort you off the premises and ban you from returning. This can be a permanent or temporary ban.
  • Back Room Interrogation: In some cases, you might be taken to a private room for questioning. While they can’t detain you against your will, this can be an intimidating experience.
  • Photo and ID Collection: Your photo and personal information might be taken and shared with other casinos through databases like the Griffin Book.
  • Increased Surveillance: If you return to the same casino or chain, expect heightened surveillance, making it harder to continue card counting.
  • Civil Lawsuits: While rare, some casinos might pursue civil action if they believe your card counting caused significant financial loss.

In essence, while card counting isn’t a crime, getting caught can result in severe consequences for the casinos to safeguard their interests.

Is It Really Hard to Count Cards?

group of people deeply focused on studying blackjack strategies and practicing card counting with a deck of card Learning to count cards correctly is a skill that requires time, dedication, and a deep understanding of blackjack strategies. The challenge in mastering card counting, coupled with the minimal profit margins and the considerable risks of being caught by casino security, makes it a daunting task for many. The article suggests alternatives to card counting, such as mastering basic strategy and bankroll management, to improve your odds without the associated risks.

Top-Rated Casinos to Play Blackjack Online

If you’re looking to enjoy blackjack, here are some of the highest-rated casinos where you can play online:

  • Ocean Casino

    Highlights: Wide variety of blackjack games, seamless online experience, excellent customer support.

  • BetMGM Online Casino

    Highlights: Live dealer blackjack, great bonuses, user-friendly interface.

  • Tropicana Casino

    Highlights: Extensive blackjack options, secure platform, attractive loyalty programs.

  • Scores Online Casino

    Highlights: Competitive blackjack variants, mobile-friendly, frequent promotions.

  • Virgin Online Casino

    Highlights: High-quality live blackjack, reliable payouts, extensive game library.

Making an Informed Decision on Card Counting

The complexities and challenges associated with card counting, along with the detailed countermeasures implemented by casinos, make it a nuanced strategy fraught with legal and ethical considerations. The discussion extends beyond the simple question of “Is counting cards illegal?” to explore the broader implications of this practice within the casino environment.

While the allure of beating the house remains compelling, the potential consequences and the strenuous effort required to master card counting urge caution. Players are encouraged to play blackjack within the rules and spirit of the game, utilizing legal strategies that offer a more secure and enjoyable gaming experience.


How can you tell if someone is counting cards?

Signs include betting pattern changes, intense concentration on the cards or the discard tray, and varying bet sizes in response to the perceived count.

How long does it take to learn to count cards?

The basics can be learned in a few hours, but mastering card counting to be effective in a casino setting can take months of practice.

Is counting cards legal if you do it in your head?

Yes, using mental strategies to count cards is legal. It’s the use of devices that’s typically illegal.

Does counting cards actually work?

Yes, when done correctly, card counting can give players a statistical edge over the casino in blackjack.

Is it really hard to count cards?

While the basic concept of card counting is straightforward, doing it discreetly and effectively under casino conditions is challenging and requires practice.

Do casinos beat you up if you count cards?

No, casinos do not physically harm players for counting cards. They may, however, ban or restrict players they suspect of counting.

Can casinos refuse to cash you out?

Yes, if a casino suspects cheating or card counting, they might refuse to cash out your winnings under certain circumstances.

Serhii Bielyi Written by Serhii Bielyi

Serhii is an Data Scientist and SEO expert with over 11 years of experience. Since 2018, he has been the SEO Team Lead at an international marketing agency. He is also a professional poker player, specifically Texas No-Limit Hold’em, since 2019.

Serhii 's articles and reviews