House Edge: The presence of zeros means that even if you place bets on red or black, odd or even, or other nearly 50/50 propositions, you do not have a true 50% chance of winning. The presence of zeros tilts the odds slightly in favour of the casino.
For this strategy, you start by wagering the table minimum on a 50/50 outside bet. You keep betting that amount until you lose. When that happens, you double your bet for the next spin and keep doubling your bet until you win.