Noun
English Wikipedia has an article on:card countingWikipedia
card counting (uncountable)
A strategy, in pontoon or blackjack, in which a player keeps a mental tally of the cards played in order to calculate the probability of certain cards being dealt and therefore obtain an advantage.
Theory of Blackjack, p. 5 Card counting is most rewarding near the end of a complete shoe when as few as possible cards remain. Source: Internet
The main techniques of advantage play in blackjack are as follows: Card counting main During the course of a blackjack shoe, the dealer exposes the dealt cards. Source: Internet
Widely used systems include: * Card counting - Many systems exist for Blackjack to keep track of the ratio of ten values to all others; when this ratio is high the player has an advantage and should increase the amount of their bets. Source: Internet