In blackjack multi-table setups with shared shoes, multiple tables draw cards from the same deck or set of decks, typically using an automatic shuffling machine. This setup allows for continuous play without the need to reshuffle manually. It also standardizes the card distribution across several tables, ensuring that each table is dealing from the same pool of cards, which can help prevent card counting and improve game security. Players at different tables are still independent, but the shared shoe creates a common source of cards for all.