Counting cards is an ability which is employed by players of card games to obtain an opportunity by tracking cards that have been played. This provides the gambler a concept of the sum of cards, that need to be dealt with. Counting cards is a technique that has more use in blackjack than in any other card game.

In chemin de fer, a gambler is at an advantage when the remaining deck contains "high cards." High cards should be faces or aces. The counter in the gambling den brings into play such situations by making larger bets, as and when they occur. Most adept gamblers use the makeup of the shoe to change their overall strategy. Inexperienced gamblers at times experience problems while trying fast card counting and may be subject to mistakes, when it comes to dealing with dealt decks. Black jack card counting is an enterprise by itself. Millions are won or lost, by both the players and the gambling dens, based on card counting techniques in use.

Computing has made its presence known on counting cards too, with enhanced devices affecting the complete activity. Traditional players however swear that a more complex card counting approach is more prone to problems, negating the added accuracy permitted by the application of computers. Anyone can dig up many schemes for black jack card counting by visiting online sites devoted to blackjack. With the game growing in appeal in gambling dens around the globe, there are newer strategies being created every other day. One can discover at least a multitude of net sites giving you tips on card counting and the overall tactic to earn cash through vingt-et-un.