Casino has an inovation I have not seen before.
They now have shuffle machines shuffling the cards in the poker tables. The shuffle machines are in the tables infront of the dealers trays. One deck is being shuffled while the hand is played. When the hand is finished the dealer pushes a button and a door opens in the table.
The dealer puts in the used deck and takes out the shuffled deck. There are about thirty percent more hands an hour.