Card counting is a skill which is employed by gamblers of card games to gain a benefit by tracking cards that have been used. This provides the player an idea of the value of cards, that need to be dealt with. Counting cards is a skill that has more use in 21 than in any other card game.

In vingt-et-un, a player has an advantage when the remaining deck has "high cards." High cards should be faces or aces. The counter in the casino takes advantage of these situations by laying larger bets, as and when they happen. Many experienced gamblers use the composition of the shoe to change their overall strategy. Amateur players at times experience problems while performing quick counting and may be subject to errors, when it comes to handling dealt decks of cards. Vingt-et-un card counting is a business by itself. massive amounts of money are made or lost, by both the players and the casinos, based on card counting techniques in use.

Technology has made its impact on card counting too, with improved devices impacting the entire activity. Traditional gamblers however attest that a more complex card counting system is more subject to error, negating the extra accuracy enabled by the application of computers. One can locate many schemes for chemin de fer card counting by visiting internet pages devoted to the game. With the game growing in popularity in casinos around the globe, there are newer game plans being developed every other day. One can dig up literally a multitude of net sites giving you tricks on counting cards and the all-around plan to earn cash through twenty-one.