Coin Machine Hack

Nov 1, 2014 - Explore Isabella Brown's board 'Vending machine hacks and tricks' on Pinterest. See more ideas about vending machine hack, hacks, vending machine. Silver oak review. Best free casino apps for ipad. The machine has that thing you put the coins I then push it in, well get some plastic coffee stir sticks there free at restarants grab a bunch put into the coin slotsat about a 45 degree angle and push it I the coin thing will push in then pull it back and remove your coffee stir sticks.it may take a bit of practice but once ya get the hang of.

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'How to win on slot machines' is a popular search term, but we all know that the real question most of the gamblers want to know if there are 'ways to cheat a slot machine'. That's ok. Everybody wonders that. Since it is just the reels turning and symbols placing, there must be a 'trick', right? Well, we will answer this question right below but we are warning you: Don't get your hopes up.

IS CHEATING ON SLOTS POSSIBLE?

No. It is certainly not possible. This is not a click-bait article, we are giving you the answer right away. No, you cannot manipulate slot machines. There are no cheats, no hacks. Sorry. There was a time when this was possible, but not anymore. (We are giving a couple examples below.) To understand why, you must learn how slot machines work.

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Most of the players still think that they are made of cogs and wheels. Thing is, they are totally 'digital' since the 90's. The spinning reels you are seeing are actually a piece of a computer code. If you open a slot machine cabinet and look inside, you won't be seeing any 'cogs'. https://free-tab.mystrikingly.com/blog/www-free-three-card-poker. The inside of a slot cabinet looks like a computer case. Each cabinet is connected to a central server, which actually 'spins' the reels. A computer software decides whether you have won or not. You cannot manipulate such a system with a screwdriver – you cannot manipulate it at all.

CHEATING THE COGS AND REELS

Up until the 60's, slot machines at casinos were mechanical devices. Believe it or not but they did not actually require 'electricity' to run. They were like mechanical watches and some casino worker manually winded them every couple of days. These were the games that could be cheated: In fact, most of the slot cheats are made to work with that type of machines. It was even possible to understand when a winning spin would happen – the cogs were making a weird sound when that was about to happen, especially if the machine was old. Thing is, there are no mechanical slot machines anymore. In 1960, all casinos switched to electro-mechanical games, which worked with electricity. These were still using cogs and wheels, but they were much harder to cheat. In the 90's, IGT presented video slots: Games that ran on a computer software. All the wheels and cogs were gone, it has been only computer code from now on. And this is the case since the last 30 years: All slot games have been running on a central server (even the ones in brick-and-mortar casinos) and they are using advanced software, which cannot be 'hacked'.

WHY IS IT IMPOSSIBLE TO CHEAT MODERN SLOT MACHINES?

That's because the results are determined by an RNG (random number generator) and it is impossible to predict the outcome. Let's explain this so it will be easier to understand. The symbols you see on the slot machine screen are not actually symbols. They are computer codes that have a numerical counterpart. Here is an example:

• Watermelon symbol: 22343
• Grapefruit symbol: 34342
• Jackpot symbol: 33525

Each time you spin the reel, the RNG software randomly generates a series of numbers. If this number is in the range of the symbol's number, that symbol is displayed on the screen. For example, if the RNG software generates a number between 22.340 and 22.350, you see the watermelon symbol on the screen, because its numerical counterpart is 22.343. Basically, it works like this:

• The RNG software tells the central server which numbers it generated.
• The central server checks the numbers and decides which symbols to place on screen.

All this happens in mere seconds. The results are really random, even the programmer of the RNG software cannot predict them. In other words, even if you have full access to the central server, you still cannot change the result of the RNG. That's why 'hacking' won't work: The results of a spin are checked by multiple sources and all this happens in a very short period of time. To 'cheat' such a system, you must hack several servers, listen to every digital communication, and get full access to the entire network. To tell the truth, if you are capable of such things, do not waste time on cheating slots. We are sure some intelligence agency will find a job for you. It will be a futile effort anyway: The RTP values of these games are known by the casinos, and if those values change, someone will notice you. In short, there are no slot cheats for modern slot games, whether they are in a brick-and-mortar or an online casino.

THE MOST FAMOUS SLOT MACHINE CHEATS: TOP 10

We mentioned that there was a time when slot cheats were possible, due to mechanical defects of the cabinets. What does double zero pay in roulette. Well, here are some examples. These are known as the most famous slot cheats of all times. We must warn you though: None of them work anymore. So if you are planning to visit a casino with this 'knowledge', know that it will be a punishable crime and a very shameful situation.

1. Cheat Code: This was a cheat method that was not open to 'public'. When the video slots first appeared, they were using simple computer code and even simpler chips. There is a thing called 'backdoor' in coding, which means the programmer leaves an open door for himself to access the software anytime he wants. Ronald Dale Harris was one of those programmers. He left several backdoors on slot codes he wrote and used some of them to gain full access to the games. Basically, he was able to predict the results before the reels start to spin. He got arrested and the casinos switched to the central server audition we mentioned above. It is impossible to do this anymore.
2. Shaved Coins: Slot machines use simple light sensors to identify the value of coins inserted. The name of this slot cheat is literal: People were shaving the outer rims of the coin. The light sensor accepts it as a normal coin since it is unable to check the outer rim. However, the payout mechanism is able to do that, so detects it as a faulty coin and refunds it. Basically, it was possible to insert a coin, spin the reels, and get the coin back. This was a mechanical fault and it is mostly fixed now. Modern light sensors check the whole surface of the coin (sides included).
3. Fake Coins: This is actually counterfeiting. Some gamblers were using hardened metal dies to make their own 'coins'. A person is able to tell the difference but a light sensor can be tricked, which was the whole 'concept' of this cheat. Once more, modern light sensors do not fall for this scam. A person named Louis Colavecchio was especially successful at this tactic and he is in jail now.
4. Yo-Yo: Get a monofilament fishing line. Tie it around a normal coin. Drop the coin to the machine. Right after the light sensor accepts it as a payment, pull the line and get the coin back. This 'tactic' used at phone cabinets too for years. It does not work anymore. But it was possible to trick the old mechanical slots back in the days.
5. Light Wand: Invented by the famous slot cheater Tommy Glenn Carmichael, this was a weird looking device. Remember the light sensors of slot machines we keep telling you about? Yeah, most of the slot cheats were designed to manipulate that system and the light wand is no exception. This device is inserted at the coin slot of the cabinets, where the light sensor is placed. Then, the device starts to flash a series of lights to confuse the sensor. With this 'technique', you can place a penny and the sensor will think you just placed hundreds of coins. The device was very small and portable, and once it goes into the slot, it is impossible to see it. The fun part is, it is actually still possible to use this technique because light sensors are unguarded against it. However, you need to know which 'light codes' the sensor accepts. This was the trick of Carmichael. He bought a couple of scrap slot cabinets, analyzed the sensors, and programmed his device accordingly.
6. Piano Wire: Take a mini-drill. Find a mechanical slot cabinet. Open a small hole next to the cogs. Insert a 20-inch long piano wire to the hole and manipulate the wheels & cogs. If you know what you are doing, you can jam the cogs and stop them at the winning spin. All of these happened back in the 80's. Well, not anymore. There is a reason why casinos stopped using mechanical slot games.
7. Top-Bottom Joint: Another device designed by Tommy Glenn Carmichael. Yes, he was the most famous slot cheater of all times. He loved to manipulate gaming cabinets – the guy had a talent for it. A top-bottom joint is a long wire. The top looks like the letter 'Q'. The bottom is connected to a mini-battery. You insert the Q part into the coin chute and give a little electricity to the wire. If you know where to 'touch' inside the cabinet, you can hot-wire the payout mechanism and force the cabinet to release all of the stored coins. Again, this technique required a very detailed knowledge of how slot cabinets work. Tommy Glenn Carmichael was buying those used slot cabinets for a reason. In theory, it is still possible to do this.
8. Monkey Paw: This was the primitive version of a top-bottom joint. Basically, a monkey paw is guitar string attached to a metal rod. If you know where it is located, you can put a monkey paw to a coin chute and trigger the release switch of the payout mechanism. Once more, it is invented by… you guessed it right, Tommy Glenn Carmichael. He used this device on mechanical slots and switched to the top-bottom joint when video slots appeared.
9. Bill Validator Device: You can insert bills into a slot machine too, coins are not the only way to pay them. This is a simple device: The top part is covered by a 100 USD bill. You put a 1 USD bill inside. Insert the device into the chute. The light sensor will accept it as a 100 USD bet. Pull the device out (and the 100 USD bill that is tied to it) and the 1 USD bill will drop into the machine. Congrats, you just made a 100 USD bet with paying only 1 USD. This technique still works on some old slot games.
10. Computer Chip Replacement: Buy a second-hand slot cabinet. Reverse engineer its chips. Write the entire code and get a chip of your own, which will favor the odds in your favor. Go to a casino. Open a cabinet, insert your own chip. Start spinning. A skillful cheater can open the cabinet & insert his own chip in less than 15 seconds. This technique does not work anymore due to the multiple control mechanisms we described above.

HOW CASINOS PROTECT FROM SLOT CHEATS?

They are investing in better light sensors, for starters. In addition, the whole casino floor is watched & recorded 7/24. Note that almost all of these cheats require physical manipulation of cabinets. So they watch the recorded streams right after anybody wins a prize. If they see the manipulation, you get arrested – simple as that. There will always be cheating players, but they will always get caught.

IT IS LUCK AND NOTHING ELSE

Do you wonder how to win at slots? It is luck and nothing else. You cannot cheat slots or use a 'system': All games are random and you cannot predict the results. Sure, there are some tips and tricks you can use to increase your chances of winning, such as choosing games with high RTP rates but that's it: You cannot cheat the system. Read our other guides that focus on slot games tips & tricks to see the 'legal' ways of increasing your luck. Using a cheat is… well, it won't end well, we can guarantee that.

Blog #01: Security Review

I love paying for laundry in my own home, for which I pay rent along with utilities. – No One Ever

Such is the situation I find myself in. Both the washer and dryer in the basement of my off-campus abode are coin-operated, demanding $1.25 and $1, respectively. My main objection to this scheme is that I believe it is a negative-sum game. I find it likely that my inconvenience in having to scavenge quarters outstrips the meager gains, which I've estimated at around $40/month, our landlord realizes when he comes around each month to collect his takings. Negative-sum games are evil, and one ought to subvert such a game when coerced into playing.

Threat Model

We should first define the goals of the attacker and what relaxations of these goals are tolerable given their cost and risk. Broadly, the optimal solution here can be said to be the one that minimizes the time and monetary costs of performing the attack as often as needed for the rest of the semester, while also minimizing risk. Risk is a key factor that cannot be ignored as it is in most computer network scenarios, given that gaining such unauthorized access to the machine likely violates the terms of our lease, and any evidence of the attack, successful or not, could likely be traced to the source without much difficulty.

A first approximation to this system consists solely of the attacker and the machine. Attacker wants the machine to execute a wash cycle. For our purposes, the machine has a single physical switch, and no matter who or what flips that switch, the cycle will execute. Access to this switch is mediated by the coin-based authorization protocol and the sturdy physical constructions surrounding these mechanisms, deterring unauthorized access. We can model this attacker's resources to include physical access to the machine at any time of day for any duration without increased risk. The property manager only comes on a monthly basis, which does not practically restrict the time window for an attack. It is also convenient to assume access to and willingness to spend some modest amount of money equal to the sum to be spent on laundry in the absence of a successful attack, times perhaps a factor of two to account for the thrill of subverting the system. We'll call this model Phe vs. Machine (PvM).

A second approximation affords the attacker the ability to interact with any external parties, for example the landlord and vendors of relevant machinery. This suggests a set of attacks that still contains those from PvM, with the important addition of a set of attacks predicated on Social Engineering, in which external parties with greater privilege relating to the target system are induced into conferring pieces of that privilege to the attacker.

Authorization: Mechanism and Products

The target machine is a Whirlpool Coin-Operated Top-Load Washer (which is actually no longer listed on the linked product page due to old age) with a Greenwald Industries Coin Chute and Greenwald Industries Money Box. The following is a model for the coin-based authorization process that I've pieced together from Greenwald Industries' website, as well as poking around I've done around the target machine.

Coin-based Activation Sequence:

1. 5 quarters are placed in the slots of a Coin Chute.
2. The chute is pushed forward, and only when all coins are present will they drop from the chute.
3. On the way down, the coins activate a Coin-Activated Starter, which flips the switch mentioned earlier to initiate the cycle.
4. The coins drop into the Money Box below the coin chute.

The chute and the starter are both accessible through the Service Door, an opening in the rear of the payment mechanism secured with a tubular lock as illustrated below.

The money box is secured with a traditional pin tumbler lock, with key-lock combinations uniquely identified by a numeric code of length varying by model. Relevent to our second model, according to Greenwald Industries' policy, replacement money box keys can be ordered if the order lists the proper key code as a form of authentication as the party originally issued the key. A complete listing of key models and their code specifications is provided here.

Attack Analysis

With the process outline above, we can start to enumerate possible attack vectors. There are three different levels of system penetration in which we can operate.

1. No penetration. All we can manipulate is the coin chute from the outside.
2. Service door penetration.
3. Money box penetration.

Coin-Chute Attacks

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If we only have access to the coin chute, we can look at the Greenwald Industries product listing for potential exploits (emphasis added):

Thick hardened front plate to protect slides from direct attack. Sliding stainless steel gates protects from tampering and rusting. Stainless steel sizing dogs provide superior protection from direct slide forcing. Hardened steel V notch coin sizing block means greater rejection of slugs, tile and foreign coins.

Immediately, we are presented with the possibility of inducing the mechanism to accept invalid currency as payment, either by brute force or using cheaper replicas. The latter carries less risk of discovery, and there are ample household materials and cheap substitues to use for manufacturing thin metal disks. Bottle caps and washers come to mind here. Another coin-chute attack is the fabled Coin-on-a-String Trick.

All of the attacks listed here carry a high risk of damage to the coin chute mechanism, which is likely not designed to degrade gracefully in the face of objects behaving improperly while interacting with the switches governing currency acceptance. The risk of irreparable damage increases with the force applied, so the potential cost of a failed attempt is on the order of hundreds of dollars, depending on the extent to which components of the washer itself are damaged. Club world casino promotions.

Service Door Attacks

The Service Door is the means by which maintainenence of the system is performed by licensed workers. This means it provides access to the Coin Chute, the Coin-Operated Starter, and the interface between the Coin Chute and Money Box. Two attacks come to mind here, both resulting in a reduced price for executing a cycle. The applicability of these attacks will depend on the configuration of the target, but they look to cover most possible configurations of Coin-Chutes and Coin-Activated Starters.

1. Change the number of coins demanded by the Coin-Chute. This is documented for all of Greenwald Industries' Coin-Chute models (G4, V5, V7, V8) except the V13, and appears to be easily executed provided a set of thin ‘buffers' used to jam slots that we don't require be filled with coins. Low-cost substitutes for the buffers look to be very viable.
2. Change the number of coins demanded by the Coin-Activated Starter. This is also documented.

In the event that neither the Coin-Chute nor Starter are manually configurable in this way, this line of attack might fall on hacking the circuit board acting as the Starter, which carries a very high risk of permanent damage given the sensitivity of ancient electronics. The previous two attacks carry a much lower risk of damage given that one has full access to the internals of the mechanism in case of a jam and both operations are well-documented and supported by the apparatus. Discovery is also unlikely because maintenance is only performed in the event of a problem; paying with foreign coins is likely to be punished, given that the money box is emptied periodically and that the subversion is easily attributable to the tenants of our house.

Gaining Service Door Access

The Service Door Attacks seem promising. Gaining this access requires picking the tubular lock, as the proper key code is required to request replacement keys for the Service Door lock as well. This has been demonstrated both with custom picking tools and with a ballpoint pen. In my efforts, I was able to file down a BIC pen cap to fit properly in the entryway (seen below), but was unsuccessful in turning the tumbler. More work to follow.

BIC cap tubular lock pick

Money Box Attacks

Obviously, if you have access to the money box, you win. The cost of a load of laundry is borrowing $1.25 for the amount of time it takes for you to put the quarters in the Coin-Chute and then fish them out of the money box. This is clearly the Holy Grail of attacks here.

Gaining Money Box Access

Getting access to the money box requires bypassing Greenwald Industries' prize lineup of locks. Nothing about this lock prohibits the standard techniques of lockpicking, and once I obtain the proper tools, I will give it a shot. The second way of bypassing the lock is to obtain a key. Short of stealing the key from the landlord, a short section in the Whirlpool Service Tips suggests the potential for a one-time bypass via lockpicking leading to persistent, convenient access to the money box:

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If the key is lost and the number is not recorded:

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1. The key number may be viewed using a mechanics inspection mirror inserted through the money acceptor opening in the front metercase into the money box. Obtain the key number off of the label inside the money box and call the money box manufacturer to request a replacement key.

In some washer models, accessing the money box once is enough to demonstrate that one is a party authorized to access the box indefinitely! This has the potential for a fantastic adventure in social engineering, as the deal must be closed by interacting with a Greenwald Industries' representative. Whether this tip holds true for all money boxes remains to be seen, but I certainly hope it does. Note that should the tip hold, we can also use access to the Service Door as a source of weak Money Box access, providing only the visual described in the tip to obtain the Money Box key code. Thus, the potential for a persistent, convenient quarter exfiltration attack exists provided either Money Box access or Service Door access. Either way, a lock must be picked!

Enough Talk

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The lowest risk, lowest cost solution seems to be to try to pick the lock on the Money Box. For even moderately skilled practitioners of the craft, lockpicking has proven an incredibly successful approach to bypassing the majority of locks, and given the age of this particular lock, I don't expect the challenge would be insurmountable. Should the lock be successfully bypassed, the decision to pursue a replacement key via social engineering would be made given the time cost of the lock picking job, which would only have to be performed every few weeks to be effective. As a final strategic note, the profit from a well-executed persistent attack should be minimal. An empty money box will surely bring the hammer down from property management, so skimming just enough to cover free laundry and pool at the GCB is likely the optimal move for an attacker with Money Box access in the long term.