The only person that would kick you out of a casino for using Martingale wagering techniques are 💹 the people who rely on your finances.

Yes, the Martingale strategy is legal on betting sites. This strategy, 💹 which originated in 18th-century France and is commonly used in games of chance that offer a 50/50 bet, involves doubling 💹 your bet after each loss so that the first win would recover all previous losses plus win a profit equal 💹 to the original stake.