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Cheating Expert Answers Casino Cheating Questions | Tech Support | WIRED

0h 29m video Published May 6, 2025 Transcribed Jul 16, 2026 W WIRED
Intermediate 12 min read For: General audience interested in casino operations, cheating methods, and security measures.

AI Summary

Casino security expert Sal Piacente answers internet questions about casino cheating, covering techniques like coolers, second deals, loaded dice, card counting, marked cards, and high-tech scams. He explains how casinos detect and prevent cheating, and shares historical anecdotes from mob-run Vegas to modern Macau heists.

[00:12]
Cooler scam

A prearranged deck of cards used by mob to guarantee wins; example given of specific card order ensuring dealer wins.

[01:08]
Dealer cheating methods

Dealers can short-pay players using hollow chip stacks (Trojan horse) or perform a second deal to keep a desired card on top.

[02:36]
Loaded dice detection

Crooked dice have heavy metallic alloy inside, causing imbalance; casinos use mirrors at craps tables to see opposite sides and detect switched dice.

[04:11]
Dice switching technique

Cheaters switch dice by palming and replacing during the shot; using same color dice makes it harder to detect.

[04:53]
Security signs for dealer cheating

Dealers turning off game or looking at security signals potential collusion; players may add or pull back bets based on card knowledge.

[05:37]
Card counting basics

Low cards (2-6) are +1, high cards (10-A) are -1; running count divided by decks remaining gives true count; at +2, increase bet slightly.

[06:51]
Magnetic dice scam

Dice with hollow spots and hidden magnets controlled by electromagnet under table; used in Thailand for decades.

[07:47]
Mob-era Vegas vs today

Mob ran casinos with violence; today corporate security is more sophisticated but less physical.

[08:46]
Ocean's Eleven heist feasibility

Not possible today; Macau is the gambling capital with high-stakes play; a real scam involved a mock casino in a hotel room.

[10:27]
Marked cards methods

Pastes applied to card backs (visible with angle), sanding edges to create 'end strippers' that separate aces, or using special contacts to see marks.

[12:46]
Chip theft prevention

RFID chips track ownership; casinos inventory chips monthly; counterfeiting is rare due to custom designs.

[13:48]
MIT blackjack team success

1% edge over house, but with large bankroll and team play (spotters and big players), they exploited favorable counts across multiple tables.

[14:57]
Thumper device

Electronic device that vibrates Morse code signals to player; used in poker or blackjack to communicate hand or strategy.

[15:55]
Perfect strategy computer

Worn on body with toe switches; tracks all cards dealt and signals optimal play via vibrations; illegal in many jurisdictions.

[17:44]
Poker cheating signals

Players signal hand strength via chip placement or finger positions; e.g., two chips stacked = pair, two fingers on top = flush.

[19:21]
Wildest scam: cooler in Atlantic City

A Superman-shirt diver switched six decks of cards during a distraction; the cooler deck was prearranged.

[20:09]
Casino blacklist databases

Cheaters are photographed and entered into a shared database; all casinos can see and refuse service.

[20:53]
Modern scams: cameras and dealers

Singapore casino hit by camera transmitting card data to Excel; dealer dumping (paying losing bets) is common in understaffed rooms.

[21:36]
Number of cameras in casinos

Hundreds to thousands of high-def cameras; footage stored for months; centralized surveillance rooms monitor multiple casinos.

[22:44]
AI and computer vision in casinos

Systems track player behavior, scan IDs, and monitor movements to detect counting; AI is increasingly used to back off players.

[23:12]
False shuffling techniques

Demonstrates how to keep top cards in place during riffle shuffle; used by crooked dealers to control card order.

[24:48]
Roulette prediction computers

Theoretically possible but difficult due to wheel design changes; requires dealer cooperation and precise timing.

[25:48]
Slot machine rigging

Illegal to make machines that never pay; but casinos can adjust payout percentages; looser machines near entrances attract players.

[26:18]
Sports betting scams

Big money scams involve fixing games (e.g., 1919 Black Sox); players collude to lose.

[26:32]
Poker collusion

Two players at same table dump chips to one partner; signals or prearranged hands used.

[26:47]
Phil Ivey edge sorting case

Ivey and partner exploited manufacturing imperfections (Diamondback pattern) to identify high cards; turned cards around to gain advantage; casinos sued and won.

Casino cheating ranges from low-tech coolers to high-tech computers, but modern surveillance and AI make detection easier. The house always has the mathematical edge, and most cheaters eventually get caught.

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Study Flashcards (9)

What is a 'cooler' in casino cheating?

easy Click to reveal answer

A prearranged deck of cards that guarantees a win for the dealer or cheater.

00:12

How does a dealer perform a 'second deal'?

medium Click to reveal answer

The dealer exposes the second card and pulls the top card back, keeping it on top.

02:05

What is the Hi-Lo card counting system?

medium Click to reveal answer

Low cards (2-6) are +1, high cards (10-A) are -1; running count divided by decks remaining gives true count.

05:37

What is a 'thumper' device?

hard Click to reveal answer

An electronic device that vibrates Morse code signals to a player, used to communicate information.

14:57

What is a 'perfect strategy computer'?

hard Click to reveal answer

A computer worn on the body that tracks all cards dealt and signals optimal play via vibrations.

15:55

How do casinos prevent chip theft?

easy Click to reveal answer

They use RFID tags in chips and conduct monthly inventories.

12:46

What is 'edge sorting'?

hard Click to reveal answer

Exploiting manufacturing imperfections on card edges to identify high cards, then turning them around to gain an advantage.

27:41

What is a 'false shuffle'?

medium Click to reveal answer

A shuffle that appears to mix cards but actually keeps certain cards in position, used by crooked dealers.

23:12

What is 'dealer dumping'?

easy Click to reveal answer

A dealer intentionally paying losing bets, often in collusion with a player.

21:22

💡 Key Takeaways

📊

Cooler scam explanation

Illustrates a classic mob-era cheating method with a concrete example.

00:12
🔧

Card counting basics

Provides a clear, concise explanation of the Hi-Lo system used by advantage players.

05:37
💡

MIT blackjack team edge

Explains how a small statistical edge can be leveraged with team play and large bankroll.

13:48
⚖️

Phil Ivey edge sorting case

Highlights a legal and ethical debate about advantage play versus cheating.

26:47
📊

AI in casino surveillance

Shows how technology is evolving to detect cheaters automatically.

22:44

✂️ Creator Tools: Viral Hooks

AI-generated clip ideas for Shorts based on the transcript

Mob's Cooler: Rigged Deck Trick

42s

Reveals a specific, historical cheating method (the cooler) with a clear demonstration, appealing to curiosity about casino secrets.

▶ Play Clip

Casino Heist: Fake Suite Scam

42s

Describes an audacious real-life scam where cheaters created a mock casino in a hotel room, combining intrigue with a story-like narrative.

▶ Play Clip

Marked Card Secrets Exposed

43s

Demonstrates how cards are subtly marked using pastes and sanding, offering a shocking glimpse into professional cheating techniques.

▶ Play Clip

Phil Ivey's Edge-Sorting Scandal

42s

Explains the controversial edge-sorting technique used by a famous poker player, sparking debate on where cheating ends and skill begins.

▶ Play Clip

False Shuffle: Dealer Cheat Move

42s

Visually demonstrates a false shuffle that keeps top cards in place, providing an educational and eye-opening look at dealer cheating.

▶ Play Clip

[00:00] Let's answer your questions from the internet. [upbeat music]

[00:12] "Do you think any casinos rig the deck Yes, back in the old days when the mob ran things, For example, one way the mob would cheat is a cooler.

[00:26] So here's a 10, 10, 8, 4, ace, 5, 2, 3, Set these cards up in this order and do it four times.

[00:40] no matter how ideal these cards are, You have a 14, you have a 19, I have a 20. Today, casinos don't need to cheat.

[00:54] All of these games are mathematically designed You can get lucky, you can win, And that's what the casinos have to figure out.

[01:08] Turbulent-Maximum596 asks, [upbeat music] Absolutely, there are many way dealers could cheat. Let's say 75.

[01:23] and pay you 75. [chips clacking] I really gave you a hundred there. would be something like this.

[01:36] but when you win, I come out and I pay you. Where in reality, I didn't. This is the Trojan horse of chips.

[01:50] It's not. It's a hollow stack of chips, where inside it, So even though it looks like I'm giving you a stack of $5,

[02:05] Another way a dealer could cheat is the second deal. and I want to save that, when I deal these cards out, But I would do it on the pitch.

[02:21] the second card is exposed right there, and I pull the top card back. and that card stays on the top.

[02:36] The dealer was so crooked, the top card was getting dusty. "How do you guys check if the dice is loaded?" these dice are made to perfection.

[02:48] However, when the crooked dice maker makes these dice, and puts a heavy metallic alloy into it, This is a balancer.

[03:02] and I spin it, watch how that die acts. Now, let's put this dye into it, which is the loaded dye

[03:14] And you're gonna see it's not balanced. more than percentage dictates, I could roll this die a hundred, there's a one.

[03:28] There's another one. When you're gonna put crooked dice into a casino, If you look at these dice, they look the same.

[03:43] and if we roll these dice, there's a hard eight, But you know what you're not seeing? On the bottom of that four should be a three.

[03:57] And the bottom of that five should be a two. These dice cannot make a seven, and you will win guaranteed. That is the reason why craps tables have mirrors around it.

[04:11] and see the opposite sides. how do the cheaters switch the dice? So let's suppose I want to switch the green dice

[04:24] When it's my turn to shoot, as I reach for the red dice, Out of all the cheating moves, But now watch how that looks with the same color dice.

[04:38] of crooked dice being used and getting caught, And they're not made for entertainment purposes. "What is it like working security

[04:53] For example, a dealer should never turn off a game. the only reason that dealer is looking at me is And usually, that means that they're about to do something.

[05:09] And some of the signs that you're looking while you're gonna hit 'em on the other side of the table. to their bet, that means they're about

[05:24] If they lose a bet, they're gonna pull some back. those cards always have to stay in view. the player can be switching cards, could be marking cards,

[05:37] Paypalou23 wants to know, Counting cards is very, very simple. 2, 3, 4, 5, sixes are assigned the value of plus one.

[05:54] Tens and aces are minus one. your count's minus two. and that is the running count.

[06:07] However, all decision, whether it be betting, playing, It is the ratio of high cards versus low cards As soon as the true count hits plus two,

[06:23] That means now it's time to increase your bet, not by a lot. So in a nutshell, card counting just means When there are a lot of high cards left to be played,

[06:39] of low cards to be played, [keyboard clicking] VastCoconut2609 asks, to cheat in casinos?"

[06:51] but a man, I believe it was Thailand. to cheat on the dice cups that were there for 40 years. that the magnets might get detected.

[07:06] So what are magnetic dice? where the spots were not filled in, You could roll 'em, they're they're regular dice

[07:18] When you put a magnet near 'em, then you could control it. or on the sides of the table. in the wheelchair of a player,

[07:32] also controlled the magnet. the guy in the wheelchair just hit the button Flying Dutch Madden wants to know,

[07:47] Was Las Vegas really different back when The movie "Casino" is a great deal A common question asked to me today,

[08:02] and cheaters the way they used to back then?" But when the mob was running things, And guess what?

[08:15] and you just saw some guy walk out with two busted hands, the Robert De Niro is the casino manager, and he noticed a dealer lifting the hold card up.

[08:30] and then, signal it back to the person playing. they brought the person downstairs, they definitely did things a little differently.

[08:46] They actually knew the moves, they knew what it looks like. Today, it's not that way. [keyboard clicking] "Could you actually pull off an Ocean Eleven heist

[09:01] I don't think so, personally." The Las Vegas Strip, the mob, the Rat Pack. However, the gambling mecca of the world is Macau.

[09:15] and the gambling that goes on there is unreal. a million dollars, one hand. he was met at the airport with a limousine.

[09:29] They had the managers outside waiting for him to greet him. to a high limit room on the 23rd floor. And then, when that player came back to the casino

[09:45] on your private VIP suite on the 23rd floor. on the 23rd floor. These cheaters or these scamsters took a private suite,

[09:58] and pushed it into a bedroom and set up a mock casino. they had phony supervisors with suits and badges, Now, I do happen to know the surveillance VP at the time

[10:15] And he said to me, "Sal, what footage? We know who they are and what they look like, Of course, it's a hotel room.

[10:27] YankinAustralia wants to know, Marked cards been behind some A simple way of marking cards, they sell these pastes.

[10:41] The professionals, they'll keep it right on the table, This little tin is concealed inside the chips. I'm playing with my chips. [chips clacking]

[10:55] I wanna mark these two cards, right? So when I come over, I see it's a four and a six. Now, I spin 'em, and I'm hitting the six again.

[11:07] and now, I'm hitting it dead center. Now, I'll be honest, if your eye is not trained When these cards are on the table, from right here,

[11:21] A real simple and effective way of marking cards, where you can actually sand off some of the back. I could take these cards, file 'em down in the middle,

[11:38] what you're gonna do is you're gonna make these aces look You can't see it, but they're shaped like an hourglass. So in theory, when I shuffle this deck right now,

[11:52] with every card except an ace. These are called end strippers. And believe me, [keyboard clicking]

[12:05] than what I just explained. "No way they have special cards like Austin Powers Now, these cards are marked from the back.

[12:17] However, I take these glasses off, A blind person could see this. There's your ace, there's your jack, and so on.

[12:30] The glasses are only for demonstration purposes. And then, no one knows you have contacts on Civil_Aside_359, "How casinos prevent people from stealing

[12:46] Well, this is money. you're actually counterfeiting money. from doing this is they put RFID into these chips.

[13:00] I actually went to mainland China. He says, if you bring me any chip, I can make it. but I was curious for information,

[13:15] If customs was to open it up, But every chip after that will match the casino They'll go in, buy a chip, and take it home.

[13:29] Now, another way casinos catch this is by inventory. and on a monthly inventory, Ladylala22, "How did the MIT blackjack team ever make

[13:48] so much bank when card counting only gives you a 1% edge In this business, people lie. If you have a small edge over the house dispersed

[14:01] And with a big bank role, you could do that. Back in the early '90s, the MIT team, students formed a team They definitely became popular later on with the movie "21,"

[14:18] A team is a group of people, very skilled at blackjack, and as soon as the cards favor them, put the big money in.

[14:30] You put 20 players on each table. but as soon as those cards favor you,

[14:42] which means the big player. So as soon as those cards become favorable to the team, They do not want the casinos [keyboard clicking]

[14:57] Next question by brandonwhite, if I was using a thumper. It's a electronic ceiling device used for players

[15:10] When they push down on the transmitter, with morse code telling you what to do. In poker, I might give you a signal to raise me.

[15:27] A great example of a thumper being used is where one player was signaling information Usually, a thumper could be on the thigh,

[15:39] But it could be anywhere [keyboard clicking] "Question for the blackjack market. I'm looking to hit the house or maybe a few."

[15:55] because they're highly illegal in a lot of jurisdictions. However, in Vegas, if you get caught with one of these, Now, what is a perfect strategy computer?

[16:08] It's a computer that keeps track of every card being dealt, how many threes are left, Now, a perfect strategy computer is normally worn

[16:22] one above the left toes, one below the right toes. And they're assigned numbers, 1, 2, 4, and eight.

[16:36] If it's a nine, you hit one eight. that was dealt, and it signals to you how to play the hand normally worn on the heel of the shoe.

[16:51] For example, [Sal imitating vibrations] [Sal imitating vibration] That might mean double down.

[17:05] They don't throw you off jeopardy You cannot get arrested. providing you're not using a device.

[17:19] But to use your brain, it is not illegal. And the casinos don't want you to have the edge. In some casinos, they are not allowed to kick you out

[17:31] to back you off blackjack and actually say to you, in the casino floor, [keyboard clicking] "What are some clear signs

[17:44] at the poker table?" [upbeat music] The reason being is, when a person folds, I look at my hand, I have a pair of kings.

[17:58] But my partner says, "Sal, I got a pair of tens." I'm going to tell her just like that. She would never fold these.

[18:11] Because I'm telling her, I got a pair of kings. did he just get cheated? But the only problem is when this person folds,

[18:24] It goes right into the muck. Here, that's one pair, that's two pair, Two fingers on top is a flush.

[18:38] That's an ace, king suited, [chips clanking] ace, queen, ace, queen suited, ace, jack, ace, jack suited. pair of kings, pair of queens.

[18:51] That's a medium pair, that's a high pair. One way you could possibly help yourself When you see people getting dealt, look at their eyes.

[19:07] it's possible they're looking for signals. no one's paying attention to the cards. in all your years in casino security?"

[19:21] One of the wildest examples of scams that I've ever heard A cooler is a prearranged deck of cards What happened was in Atlantic City, they needed everybody

[19:36] Because everyone is turned away And this one person stands up at a blackjack table And he rips open his shirt, and there's a Superman T-shirt.

[19:53] but no one saw six decks of cards being switched in "I wonder how many gamblers are able Well, there are many, and usually, they all get caught,

[20:09] and they recognize you're in the book, They ask you to leave ,and you're not allowed tn the old days, they were actually binders

[20:24] Casinos actually subscribed to it and received binders. When you get put into that system, all the casinos So once you're put into that database,

[20:39] could see if you're in that system. or threat that casino surveillance The biggest scams that are going on today are with cameras,

[20:53] For example, one casino in Singapore got hit They were transmitting cards outside in an Excel spreadsheet, and then, transmitting information

[21:09] back to the player at the table on how and when to bet. Now, technology aside, the most common scam that happens at casinos are dealers dumping the game.

[21:22] If you lose, they just pay you. but a lot of the rooms are understaffed. that move could be good.

[21:36] how many cameras are in casinos?" there might be hundreds of cameras. there are thousands of cameras.

[21:48] However, these cameras are high def, which means they could zoom in and zoom out after the fact. and then, those tapes were gone, they were erased.

[22:02] and then, look at it a month later. Many companies that own several casinos are actually going So one surveillance room could be watching

[22:15] surveillance rooms, casinos do keep in touch and walk into another casino that's owned chances are good a call was made already.

[22:30] surveillance rooms do keep [keyboard clicking] "How long until most casinos have computer vision AI to back off players?"

[22:44] Many casinos have systems and computer software and know if a person is counting. they actually take your driver's license, scan it,

[22:58] they know when you're leaving that floor, where you are. to the moment you leave.

[23:12] That's a great question, 'cause when a person's gonna cheat, I'm gonna explain to you and show you how to false shuffle, The first shuffle, I pull back the top card,

[23:27] And then, I shuffle for real. The next shuffle, I just push up on that bookmark, And I just shuffle them right back to the top.

[23:44] I just took 'em from the middle. and I just kept those cards right here. I go to throw 'em in the middle, the last second,

[23:57] Then, I pick these up, throw 'em onto the table. I kick these out, I push them back to the top, And now, they look like they really got mixed,

[24:10] This shuffle is called a in the hands riffle. And all I'm doing is I'm just keeping these cards on top.

[24:22] than my right hand, And as you're talking This is the casino shuffle.

[24:35] When I cut, I hold the break right above them, Now watch that face down.

[24:48] This is from No Stupid Questions subreddit. that can accurately predict There are people selling roulette prediction computers.

[25:04] Laurance Scott wrote a great two volume treaties where you can mentally track the ball speed You need a dealer to allow you to bet right up

[25:20] Also, the way the roulette wheels are being manufactured So the cone, it's a lower profile, And all these are to help increase randomness.

[25:34] it's not as easy as you think. I don't know. By the turn of a screw, they can make the machines looser,

[25:48] It is a hundred percent illegal to make those machines where they cannot pay out at all, but it can be done. that pay more closer to the entrances.

[26:05] where they think they have a chance. with the bigger jackpots, those are gonna be the ones DeerBoi157,

[26:18] Well, in the casino, if you want a big money scam, If you wanna cheat at sports, you need the players. where they got the White Sox to throw the game.

[26:32] in poker?" and purposely losing them to your partner me and my other partner will dump our chips off

[26:47] DankPoker wants to know, Phil Ivey is a world famous poker player. with a partner named Kelly Sun.

[27:00] for millions of dollars. This is the biggest debate in the casino industry. So you're probably sitting there saying,

[27:14] If I take this casino deck of cards, because before the casino sells them If I take this deck, and I shuffle 'em,

[27:28] is that a ten or an ace? That's a low card. How about that one?

[27:41] So you're probably saying, how is he doing this? on how playing cards are cut, it is impossible This is called a Diamondback.

[27:56] If you look on this edge right here, Where on this edge, it's a full diamond. So in this particular deck, every card is cut the same way.

[28:09] However, if I could somehow get cards turned around, Even though they're shuffled, if I look down, That is a low card.

[28:23] That is a 10 or an ace. to turn the cards around. to turn cards around for him?

[28:36] Casinos want the money. to become pre-shuffled, and we don't want a wash. and scrambles 'em all over the table.

[28:49] Then he says, we want the cards shown to us first, Plus, we want to bet after the cards have been dealt.

[29:01] Now, Phil Ivey makes his bet, a little bet. If Kelly Sun said that card is unlucky,

[29:13] Unlucky, that's unlucky. So because certain cards were turned over this way, no matter how these cards get shuffled,

[29:27] you could look down and see, wait a minute, big diamond, So what does that mean? over the house right now, [keyboard clicking]

[29:42] Thanks for watching "Casino Cheating Support." [upbeat music]

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