Hacking Slot Machines by Reverse-Engineering the Random Number Generators
Interesting story:
Fey had a collection of nearly 200 antique slots Mills machines from the 1906 Iron Case to the 1962 Compacts. These Mills machines and numerous others from contemporary manufactures are pictured in his collector's classic, Slot Machines, America's Favorite Gaming Device. Over 630 photographs, 504 in color. Slot machines are graded according to different grade levels. Please consult a competent professional appraiser using the latest pricing guides to gain a more thorough view of your machine's value. We DO NOT calculate values for machines that are counterfeit, fake or reproductions. (Those machines are completely worthless for true slot.
The venture is built on Alex’s talent for reverse engineering the algorithms — known as pseudorandom number generators, or PRNGs — that govern how slot machine games behave. Armed with this knowledge, he can predict when certain games are likeliest to spit out moneyinsight that he shares with a legion of field agents who do the organization’s grunt work.
These agents roam casinos from Poland to Macau to Peru in search of slots whose PRNGs have been deciphered by Alex. They use phones to record video of a vulnerable machine in action, then transmit the footage to an office in St. Petersburg. There, Alex and his assistants analyze the video to determine when the games’ odds will briefly tilt against the house. They then send timing data to a custom app on an agent’s phone; this data causes the phones to vibrate a split second before the agent should press the “Spin” button. By using these cues to beat slots in multiple casinos, a four-person team can earn more than $250,000 a week.
It’s an interesting article; I have no idea how much of it is true.
Mills Antique Slot Machine
The sad part is that the slot-machine vulnerability is so easy to fix. Although the article says that “writing such algorithms requires tremendous mathematical skill,” it’s really only true that designing the algorithms requires that skill. Using any secure encryption algorithm or hash function as a PRNG is trivially easy. And there’s no reason why the system can’t be designed with a real RNG. There is some randomness in the system somewhere, and it can be added into the mix as well. The programmers can use a well-designed algorithm, like my own Fortuna, but even something less well-thought-out is likely to foil this attack.
Mills Slot Machine Models
Posted on August 7, 2017 at 6:00 AM • 43 Comments