A blackjack card counter that doesn't play at a blackjack table but instead he counts the cards played at the table he watches. He joins that table only when he thinks he has a good shot for winning. In order to avoid such cases casinos do not allow blackjack players to join a table before the cards are shuffled again.

Counting cards while not involved in the game. A counter who is back counting is generally waiting for an opportune time to join the game.

(). Counting Cards in a Blackjack Game while watching a table but not playing.