The best way to track cards while counting in Blackjack is to use a card counting system, such as the Hi-Lo method. In this system, you assign values to cards: low cards (2-6) add 1 to the count, high cards (10-Ace) subtract 1, and neutral cards (7-9) don’t affect the count. As cards are dealt, you keep a running total of the count, and if multiple decks are used, you adjust this to a true count by dividing the running count by the number of decks left in the shoe. A higher true count signals more high cards remaining, which is favorable for the player. This information can help you adjust your bets and playing decisions—betting more when the count is positive and less when it’s negative. To be effective, card counting requires practice, quick thinking, and discretion, as casinos are vigilant about detecting counters. While it offers an edge over the house, it doesn’t guarantee consistent wins due to the inherent variance in the game.