Nobody has even been able to prove they became a milliionaire soley from playing roulette with a mechanical written system. So I seriously doubt it. There have apparently been teams who have exploited a so-called biased wheel in a casino. And others used some kind of computers to give them an advantage. They have cheated their way to 7 figure sums. The only people the casinos mess up their britches for are card counters in blackjack.