Card counting is generally ineffective in online Blackjack because most games use automatic shuffling or continuous shuffling machines, which reset the deck after every hand, making it impossible to track card sequences. In live dealer Blackjack, although real cards are used, the frequent shuffling and multiple deck systems still limit the effectiveness of card counting. Additionally, online casinos often monitor gameplay for betting patterns and may ban players suspected of counting cards. These factors make card counting much harder to use successfully in online environments.