The change to the normal procedures will only occur until the suspected player either starts to lose or leaves.how to win an online roulette DOES DOUBLING UP ON ROULETTE WORK For example, a casino may forbid the use of electronic prediction devices such as roulette computers. But the law may not state that electronic devices are illegal. It is illegal everywhere, except on casino cruise ships that are in international waters. Casino chain bans gambler who won £28, on roulette wheel in two months . Only ever been one system and it included an illegal hidden.