Counting cards is a skill which is used by gamblers of card games to realize a benefit by following cards that have been used. This gives the player a theory of the value of cards, which need to be dealt with. Counting cards is a technique that has more use in blackjack than in any other card game.

In black jack, a player has an advantage when the remaining deck holds "high cards." Big value cards can be tens or aces. The card counter in the gambling den takes advantage of such opportunities by placing larger wagers, as and when they occur. Several adept gamblers use the composition of the shoe to change their overall tactic. Fairly new gamblers at times will have problems while engaged in fast card counting and may be subject to mistakes, when it comes to working with dealt decks of cards. 21 card counting is a business on its own. Millions are made or spent, by both the gamblers and the gambling halls, based on card counting techniques in play.

Technology has made its impact on card counting too, with enhanced computing power impacting the complete process. Traditional gamblers however attest that a more complex card counting approach is more prone to blunders, negating the increased accuracy permitted by the application of computers. One can dig up many schemes for black jack card counting by visiting net pages committed to the game. With the game increasing in popularity in casinos all over the planet, there are newer game plans coming up every other day. One can locate easily hundreds of Web sites providing you ways on card counting and the across the board tactic to earn profit through vingt-et-un.