Counting cards is an ability that is used by players of card games to realize an advantage by tracking cards which have been played. This provides the gambler an idea of the value of cards, which have to be dealt with. Card counting is a technique that is more beneficial in blackjack than in other card game.

In 21, a player is at an advantage when the remaining shoe contains "high cards." High cards can be faces and aces. The card counter in the casino takes advantage of such situations by placing greater wagers, as and when they happen. A good many knowledgeable gamblers use the composition of the deck to adjust their overall plan. Inexperienced gamblers occasionally will have problems while performing quick counting and could be prone to mistakes, when it comes to dealing with dealt decks. Black jack card counting is a business by itself. Millions are made or lost, by both the players and the casinos, depending on card counting methods in play.

Technology has made its impact on counting cards too, with refined devices impacting the entire activity. Long-standing gamblers will attest that a card counting system of greater complexity is more subject to blunders, evening out the increased accuracy permitted by the use of technology. One can dig up many techniques for vingt-et-un card counting by going internet pages committed to the game. With the game growing in popularity in gambling dens all over the globe, there are newer schemes being created every other day. One can discover at least thousands of Web sites providing you hints on card counting and the across the board tactic to make money through vingt-et-un.