Another way to cheat slot machines doesn’t involve bringing special equipment into the casino, but it still requires special equipment. If you can manufacture counterfeit slot machine tokens, like Louis Colavecchio did in the late 1990s, you can win money at the slots without having to risk any real money.
Of course, this requires a very specific skillset that most people don’t have. Developing that skillset requires an investment of time and money, and the purchase of the equipment to create those tokens requires another investment of time and money. Most people would probably be better off learning how to count cards or play poker at the professional level. Both are lower risk ways of making money while gambling.
Another way of cheating would be to just flat out steal a slot machine and take the money out of it. That’s not very practical, but someone clever might get the idea that he could steal the coin box from a machine. We’re not convinced that this approach is any more practical. The coin box might be easier to carry, but getting past casino security is going to be a huge challenge. Slot machine cheaters who resort to outright theft have a much higher tolerance for risk than we do.
We don’t recommend cheating at slot machines. In every gambling jurisdiction that we’re aware of, cheating at gambling is a serious crime. If you’ve ever seen any movies set in casinos, you’re probably also aware that casinos who get involved in their own enforcement aren’t going to be especially generous when dealing with cheaters, either.
It’s important to point out, too, that there’s a difference between advantage gambling techniques and cheating. For example, counting cards is an advantage gambling technique that doesn’t legally count as cheating—the player 
Casinos consider that cheating, and they’re quick to ban a card counter, but counting cards isn’t illegal. No one has ever served time over counting cards.
On the other hand, if you were to palm a card and switch it for a card you had in your sleeve, then you’d be committing a crime.
The difference is that cheating involves making a change to one of the elements of the game. That can include the components of the game, the amount bet, the amount paid out, or the frequency of the amounts bet.
Nevada charges a minimum $10,000 fine to cheaters. If you’re convicted of cheating, you can spend up to six years in prison. On top of the fine and the prison time, you will also have to make restitution to the casino. That’s a losing proposition no matter how much you win, and eventually you will get caught.