There are so many ways to cheat at blackjack though, and we don't recommend any of them. Actually cheating at a casino games can get you in big trouble with the law, and you probably don't want to tangle with the security at a casino either. This is more of an intellectual discussion of cheating as it pertains to blackjack, rather than a "how-to" manual.
Spooking is one of the blackjack cheat and illegal ways to find out about the cards of your rival. This kind of cheating has changed a little bit lately though the old way of it is also possible to observe today. This cheating method takes 2 people – one person to play the hand and a second to stand near or behind the dealer to peek at the dealer's hole card. Once the hole card is determined, the spotter conveys the information to the player by a secret signal.
Spooking was actually a dealer’s way to cheat blackjack first. After giving a player the first card and seeing that this card was of 10 points or an Ace, a dealer tried to peek under the second card in order to find out whether the player would have blackjack. If so, this dealer turned up the card and stopped the game immediately without playing any hands.