Counting cards is a skill which is used by players of card games to obtain a benefit by following cards which have been played. This provides the player a concept of the value of cards, that have to be dealt with. Card counting is an ability that has more use in twenty-one than in any other card game.

In chemin de fer, a player has an advantage when the remaining shoe holds "high cards." Big value cards could be tens or aces. The card counter in the casino takes advantage of these circumstances by laying larger bets, as and when they occur. Quite a few adept gamblers use the makeup of the deck to alter their overall tactic. New players on occasion will have difficulty while performing rapid card counting and could be prone to mistakes, when it comes to dealing with dealt cards. Black jack card counting is an industry by itself. Millions are made or squandered, both by the players and the casinos, depending on card counting methods in play.

Computing has made its impact on counting cards too, with improved computing power affecting the entire process. Long-established players will argue that a card counting system of greater complexity is more prone to breakdown, evening out the increased accuracy allowed by the use of technology. Anyone can dig up many schemes for blackjack card counting by going online resources committed to the game. With the game increasing in fame in gambling dens all over the globe, there are newer schemes being developed every other day. One can find easily hundreds of Web sites providing you tips on counting cards and the across the board tactic to earn profit playing chemin de fer.