Card counting in online Blackjack is much less effective than in land-based casinos due to the use of random number generators (RNGs) in digital games, which shuffle the deck after each hand and eliminate any ability to track cards. Even in live dealer games, where physical shuffling occurs, online casinos counter card counting by using frequent reshuffling, multiple decks, and monitoring player behavior. These measures make it challenging for counters to gain an advantage, as they are designed to reduce the opportunities to track card composition and adjust bets accordingly.