Card counting is an ability which is employed by players of card games to achieve a benefit by following cards that have been played. This gives the gambler an idea of the value of cards, which have to be dealt with. Counting cards is a skill that has more use in vingt-et-un than in other card game.

In blackjack, a player is at an advantage when the remaining deck contains "high cards." High cards can be faces and aces. The card counter in the gambling den uses these opportunities by making greater wagers, as and when they occur. Several experienced gamblers use the composition of the shoe to change their overall course of action. Inexperienced players at times experience difficulty while performing quick counting and could be subject to mistakes, when it comes to handling dealt decks. Vingt-et-un card counting is an industry by itself. millions and millions are made or spent, both by the players and the casinos, depending on card counting methods in use.

Technology has made its impact on counting cards too, with improved devices affecting the entire process. Long-established gamblers however vow that a card counting scheme of greater complexity is more subject to blunders, negating the additional accuracy enabled by the application of technology. Anyone can dig up many schemes for vingt-et-un card counting by visiting online resources devoted to the game. With the game growing in appeal in gambling halls around the globe, there are better plans being created every other day. One can dig up easily thousands of Web sites sharing with you tips on counting cards and the overall strategy to earn cash through twenty-one.