Apart from being regulated, casinos also sometimes offer live in-play betting. In short, this allows you to watch the ball spinning (roulette) or hands being dealt (blackjack) in real-time, as if you were there watching it happen. This, again, is completely legitimate as the casino has to have approval before offering these services. As all of the services offered by casinos are monitored and regularly re-tested, casinos have an obligation to ensure that their software meets the satisfactory requirements of the law. If a casino states that a slot machine has an average payout rate of 94%, then that slot machine has to payout at 94% or above during the course of several months.
The regulators who monitor each online casino regularly perform spot-checks on casinos to make sure that their software hasn't changed, so you can always rest assured that the majority of casinos which you deal with online are performing well within the law.
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