A:
[Editor's Note: Blackjack advantage-play expert Arnold Snyder wrote this answer.]
Players have been backed off, barred, and back-roomed from just about every casino table game and slot machine. Blackjack is the most common game for this to occur because casinos are aware that players can beat 21 via card counting and other methods, plus card counters are easy for casinos to identify by observing their betting decisions.
Because there are so many ways of beating blackjack, however, both legally and illegally, blackjack is the game that amateurs are most likely to be backed off or barred from. Many amateurs have been booted from blackjack just for having a winning streak, or being seen talking or socializing with a player believed to be a card counter.
But all table games are vulnerable to cheating methods. Casinos watch out for dice "sliders" at the crap tables, "past posters" at roulette, hole-card players on any of the "carnival" card games, like three-card poker, Caribbean stud, etc.
Dice sliding, which is throwing one of the dice so that it spins sideways and never hits the backboard, is illegal. Past posting at roulette (or any game), which is changing a bet after the winning number has been determined, is illegal. Some hole card techniques have been ruled legal in Nevada's courts, so they're technically not cheating, but casinos do not tolerate hole card players at any games if they detect, or even suspect them.
Video poker, and primarily the progressive jackpot version, is a slot game that pro players have targeted for decades, as these games can be beaten via intelligent play. In most cases, solo players are left alone, as the jackpot payouts don't cost the casino anything since the jackpots represent money lost by prior players. But if a team of pros takes over an entire bank of machines to ensure themselves of collecting the jackpot, many casinos will back them off.
Unless cheating is strongly suspected, meaning that a casino's surveillance department believes it has sufficient video evidence to prosecute, players are rarely back-roomed anymore. This tactic that was once a fairly common way to harass and scare card counters has proven too costly to casinos when the victims sue for false imprisonment, etc. Likewise, I haven't heard of any physical attacks on players in many years. Corporations worry more about lawsuits than the mob did.
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