Card counting techniques like the Hi-Lo system can be an effective way to improve your odds of winning in blackjack. The advantages of using these techniques are that they can help you make better decisions by keeping track of the cards that have been dealt and adjusting your strategy accordingly. For example, if the count is high, you may choose to increase your bets, as this indicates that more high cards remain in the deck. On the other hand, there are some disadvantages to using card counting techniques. First, they can be challenging to master and require a significant amount of practice.