Have you ever thought about the methods to hack video slots at casinos? However never try to translate such thoughts into practice. Let them stay in the world of your fantasies. Otherwise, the chances of finding yourself in jail are very high, because the security services of gambling houses are up-and-doing.

The information available in our article is cognitive in nature. We do not encourage readers of Casinoz to use cheaters' experience, which will be discussed below, for practical purposes.

It should be noted that the methods of hacking gambling machines in land-based casinos are discussed in our article. A separate publication will be dedicated to cheaters at online casinos.

Tommy Glenn Carmichael is mentioned several times in the list. The legendary cheater was one of the most famous experts in hacking slots. In a few years he stole millions of dollars from various casinos, but eventually he failed to escape prison. His activities are described in a separate article.

So, let's enumerate and describe the most common ways to cheat when playing slots.

Top-bottom Joint

Many people believe that this tool of cheaters was invented by Tommy Carmichael. However this is only a curtsey towards the famous fraudster. He really used it and even modified it, making the tool more convenient and efficient. However the top-bottom joint was known among cheaters before Carmichael.

We are talking about the device, consisting of a guitar string and a piece of steel. It was put into the coin slot to hook the switch and force it to give out coins.

This primitive technology brought Tommy up to one thousand dollars per hour. We can only guess how many other cheaters used to take advantage of it in the age of one-armed bandits.

Monkey Paw

The ridiculous name Monkey Paw hides a thin and long piece of wire curved in a special way. It is believed that Carmichael invented it. However it would be more appropriate to say that Tommy created it on the basis of pre-existing developments. He made his first version of the tool from metal clothes hangers, improving it several times.

Monkey Paw was suitable for hacking mechanical gambling machines. Cheaters inserted a hook inside the slot and searched for a switch focusing on the sound. Pushing it, they made the slot share its chips.

Monkey Paw has various types intended for certain models of slots.

Light Wand

The so-called light wand is another Tommy Carmichael's invention. Like all his discoveries, the device had a primitive design, but was extremely effective. This is a tiny flashlight attached to a piece of wire.

Tommy used it to hack slot machines whose operation was based on the technology of optical sensors. The principles of the operation of such video slots were explained to him by a naive employee of IGT at the exhibition. Carmichael bought the device, studied its structure and figured out how to cause a malfunction in the sensors, blinding them with a light beam.

Light Wand is not out-of-date. Cheaters still use it in land-based gambling houses.

Fake Coins

As soon as gambling machines with chips appeared, scammers began to use fake coins. Manufacturers of video slots have tried to improve anti-counterfeiting technologies, but fraudsters have kept up.

Louis Colavecchio was the genius of fake coins. He was even nicknamed The Coin. He also created fake chips, which were used by him to cheat casinos and earn half a million dollars. However he was sentenced to jail. The cheater spent in prison seven years.

Chip Replacement

Simply incredible scams were performed by Dennis Nikrasch at casinos in Las Vegas. He ordered computer chips from the manufacturer of slots and bought keys from gambling machines on the "black market." Then he only had to master how to quickly replace the chips in casino slots.

This brilliant technique brought him several million dollars, but did not help him to avoid prison.


This is another invention for hacking gambling machines excellent in its simplicity. The coin is attached to a thin wire. A scammer inserts it into the slot receiver and pulls it out as soon as the device registers the insertion of the chip. So, the cheater can endlessly play for just one chip.

Scammers hacked video slots with receivers for paper banknotes in the same way. The only difference was that they used an adhesive tape for banknotes. This technique of hacking gambling machines used to be popular in the post-Soviet countries in the initially appeared slot halls, where there were primitive models with insufficiently reliable protection systems.

Shaved Coins

It's not necessary to make fake casino chips and spend money on their production. It is possible to take a single chip and cut off its small amount in order to use it repeatedly. This beneficial trick was successfully used in 1982 by a group of scammers.

The invention was inscribed in the history of cheating as shaved coins. Scammers got the principles of slot operation and cut off pieces of real casino chips, making small changes in their shape. The chip was accepted by the device, allowing cheaters to play, and then it threw out a coin, considering it not suitable.

It was almost a "perpetuum mobile" for hacking slots.

Software Bugs

Video slot software bugs are observed even in devices of the most famous developers. It is not a big deal if they are variable. It is much worse if cheaters discover a permanent bug. If the error is favorable for customers, they will fully use this glitch.

As an example, we can mention the event with The Game King video slots. They had a periodical bug and paid out excessive money to customers in certain situations. The scandals with such devices occurred in different periods of time and it seems we will hear about such cases in the future.

In this situation, the developer is primarily the one to blame. However keep in mind that the deliberate use of software bugs is considered to be a fraud. This is mentioned in the rules of most casinos.

Do not rush to spend money on the Internet to buy secret techniques of hacking slot machines at the level of software. They are usually sold by fraudsters. Think logically. Who will sell the goose that lays the golden eggs?

Cheat Codes

This practice became possible with the appearance of electronic gambling machines. Scammers selected certain combinations of buttons on the control panel or algorithms of other actions, allowing them to affect the activity of the device.

Ronald Dale Harris was the most successful. He worked as a programmer in the Nevada Gaming Commission. The list of his duties included coding of computer chips for video slots. Ronald coded them in such a way that it was possible to hack a slot machine with the help of simple actions.

The system was extremely simple. Harris's accomplices inserted the coins in the appropriate order. For example, the following order was successful: two chips -pause -three chips - pause - one chip, etc. When the sequence was completed, the slot machine automatically paid out money.

Ronald Harris succeeded in cheating the casinos and his colleagues from the Nevada Gaming Commission. As a result, his scam was noticed, and the scammer was jailed.

Cheat codes are still popular among slot cheaters.


To sum up, we want to remind readers of Casinoz once again that we do not approve cheating. Do not try to hack a slot machine, even if you are sure that you will not be punished for that or think that it is good to punish unscrupulous casinos. This usually leads to problems with the law and other troubles.

Be reasonable!

Perhaps, you have worked at casinos and faced the attempts to hack gambling machines? Have you tried to implement such methods? We invite you to share your experience in the comments.

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