There have been many attempts to cheat at roulette and some of them have been very successful, while in fact many others may be entirely unknown. Cheating at roulette has a long tradition. Attempts to beat the wheel were frequent in the early days of the game, primarily because the roulette wheels were not precisely engineered and bias in the wheel was common. In recent times the wheels are manufactured using precision engineering and do not possess bias, but this has not deterred modern day high technology roulette cheats who have employed invisible laser ball tracking and computers to predict where the ball will end up.
In the early days of roulette it was common for casino cheats to tip croupiers to record every result of the wheel spin over weeks and months. These would then be analysed to discover bias. For instance, some wheel might favour a particular section of slots where the ball would end up more frequently that it would if the results had been random. Sometimes bias was exposed in several wheels in a casino, and as a result casino owners lost large amounts of cash. In an attempt to overcome this they would break down the wheels into individual components and reassemble them every day exchanging components between wheels. This worked to a large extent, and as engineering techniques improved it became possible to iron out the bias.
The most recent know attempt to cheat at roulette employed a smart phone which was connected to a laser scanner. When the ball was circulating the contra-rotating wheel, the sensor produced a signal in the phone which indicated the ball’s speed, position relative to the wheel, and its trajectory. The smartphone was programmed to use this information to predict which section of the wheel the ball would land in. The user simply checked his phone for the answer before placing his bets. Considerable sums of money were thus obtained before the cheats eventually were caught. Nowadays you will find that smart phones are banned from most casinos. However, if you visit onlineroulette.org to play roulette, you can still have your smart phones with you!