Card counting in blackjack allows you to track the ratio of high to low cards left in the deck, giving you an edge over the casino. By keeping track of the count, you can adjust your betting strategy to capitalize on favorable conditions. When the count indicates more high cards are remaining, you can increase your bet, as the chances of hitting a strong hand improve. Conversely, when the count shows more low cards, reducing your bets can help minimize losses. Additionally, card counting can guide your decisions on whether to hit, stand, or double down. To refine your strategy, you can use the "true count," which accounts for the number of decks remaining, especially in multi-deck games. While card counting itself is not illegal, it's important to be discreet, as casinos may detect and ban counters. Overall, card counting enhances your ability to manage risks and make more informed betting decisions.