Casinos have implemented advanced tactics to stop slots cheaters and have installed modern equipment into their machines. One of these features is the coin comparator, which recognizes coin density or weight to check whether a coin is real or fake. This is similar to the technology used in vending machines with paper money.
As I stated earlier, a famous slots cheater is Tommy Carmichael, the inventor of the slider or “monkey paw”. He is notorious for slots cheating and has been caught and sent to jail many times and is well known in the black book of cheaters that are banned from Vegas. He made off with hundreds of thousands of dollars in stolen cash from slots. This name may sound familiar if you watched all the shows about him on History channel and Discovery channel.
Casinos are now coming up with even better ways to prevent the more primitive ways of cheating by using physical and mechanical slots cheating devices like the monkey paw, slider and coat hanger. Now the slots are leaning more to electronics and circuits, meaning a cheater would have to be more experience at tricking the computer rather than using brute methods. Programmer Sabotage would be the more common way to defeat the slot machines. The slots are the bread and butter to the casinos, so they are willing to upgrade new preventative measures to hold back cheaters.