Counting cards is an ability that is employed by gamblers of card games to achieve an advantage by following cards that have been dealt. This provides the gambler a theory of the sum of cards, which need to be dealt with. Counting cards is a skill that has more use in black jack than in other card game.

In vingt-et-un, a player is at an advantage when the remaining shoe contains "high cards." Big value cards should be faces or aces. The card counter in the gambling hall uses these situations by making greater wagers, as and when they occur. A great many experienced gamblers use the composition of the shoe to change their overall course of action. New gamblers at times experience problems while engaged in fast card counting and might be prone to errors, when it comes to working with dealt decks. Chemin de fer card counting is a business by itself. huge amounts of money are made or lost, both by the players and the gambling dens, based on card counting methods in play.

Technology has made its presence known on counting cards too, with enhanced devices impacting the complete process. Long-established players will swear that a card counting scheme of greater complexity is more subject to breakdown, canceling out the added accuracy permitted by the application of technology. Anyone can find many tactics for blackjack card counting by visiting web pages committed to the game. With the game growing in popularity in gambling dens all over the world, there are newer tactics coming up every other day. One can discover easily hundreds of Web sites providing you pointers on card counting and the across the board scheme to earn profit through 21.