Counting cards is an ability that is employed by gamblers of card games to realize an opportunity by following cards which have been played. This provides the gambler a theory 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 has an advantage when the remaining deck holds "high cards." High cards can be faces and aces. The counter in the gambling den brings into play such opportunities by making greater bets, as and when they happen. A great many experienced gamblers use the makeup of the deck to adjust their overall course of action. Inexperienced players at times have difficulty while trying rapid card counting and may be subject to errors, when it comes to dealing with dealt cards. Black jack card counting is an industry by itself. massive amounts of money are made or squandered, by both the gamblers and the casinos, based on card counting methods in play.

Technology has made its presence known on card counting too, with refined computing power impacting the complete process. Long-established gamblers however swear that a card counting scheme of greater complexity is more prone to breakdown, canceling out the added accuracy enabled by the application of computers. Anyone can discover many game plans for blackjack card counting by going online sites devoted to the game. With the game growing in popularity in gambling dens all over the globe, there are better plans coming up every other day. One can dig up literally thousands of Web pages sharing with you pointers on counting cards and the overall plan to make cash through black jack.