Management of a casino and manufacturers of the equipment are perfectly informed with similar methods and constantly fight with them. An interdiction on bets after a throw of a ball, an interdiction on use of mechanical methods of the. But the opposition proceeds and probably we will see new methods of a prognosis the result of rotation of a roulette wheel. Or to get in trouble from security service of a casino. The last more is more probably. So is it possible to predict where the ball will stop? The case is hopeless. Is it so? No, not so. Such phenomenon is called Biased Wheel. No one knows why such a behavior of a wheel is named a defect. For the player, it is more likely a gift of destiny. The example of use of such " a. Probably one of the most interesting things at consideration of game of roulette is a prediction of the result of rotation of a roulette wheel. Most of all conjectures, legends and theories are devoted to a question " Whether. For years of existence of roulette inventive players have invented various ways of struggle with a case. Roulette table as any other mechanic device, can have defects or get them eventually. Because of this defect some numbers or groups. Recurrence of the same actions for a set of times results an automatism. Some croupiers, not understanding by themselves, do these actions all time in the same way. As a result, it is possible to predict where the ball. Thus like to tell histories about "croupiers - snipers" (the croupier, which can throw out by order the necessary sector or even number (!). But if there are "croupiers - snipers" it is possible to use their skills. It is necessary to notice that if under expression " to win in a roulette " a swindling is meant then it is better not steal a chesspiece, but to put it on the winning field after a stop. They have bought a roulette table, have fulfilled a technique and then played in. Atlantic City. Similar methods are used till now. Sector Targeting, tracking, cloaking, the ballistic approach - only some names of similar methods. So owners of casinos declare. But technologies were improved not only in a casinos. Edward orp and Claude Shannon have developed a way how to define a trajectory of a ball with the help of computer. This feature is called a "a croupier's signature" (dealer's signature). There are methods how to search for such croupiers, to analyze their actions and to use advantage of their "signature". Casino staff, and the owners of a casino especially.