The film is inspired by the true story of the MIT Blackjack Team as told in Bringing Down the House, the best-selling book by Ben Mezrich.
At any rate, can casinos beat you up for counting cards?
Casino security can tell you to leave If they think you're counting cards. If they have evidence that you are actually cheating, they can call the police to arrest that person. The beating up only happens in the movies. ... So the answer is generally no, card counters are not beaten up.
Afterall, how do card counters get caught? To catch card-counting teams, they usually hire undercover private eyes or detectives dressed in plain clothes who roam the casino floor and look for the said behaviors that team players can use to signal other team members.
As well as, will casinos ban you for winning?
As a general rule, no casino will ever ban you for winning, provided that you are playing inside the game's rules and without taking advantage of any form of system to gain better odds. Counting cards falls under this category and, although it's not cheating, it is classified as using a system for an unfair advantage.
Is counting cards against the law?
Counting cards is a legal activity. There are no federal or state laws stating that card counters are committing an offense. Police officers cannot arrest you for counting cards at a casino, nor can they convict you of any crimes.