As for this kind of blackjack dealing shoe, you have to remember the barcodes, as every card has its  different barcodes, so that you will be able to know what the cards are when you or your partners see  the bar-codes in the TV in the other room. 
 
While as for this kind of blackjack dealing shoe, the barcodes on the sides of cards is different length lines,  this barcodes lines just stand for different value and numbers of cards, but can not tell you what the  suites of these cards.
 
As for the speed and noise of change the cards, now we are able to make and control the speed and sound when you use the remote control to change the cards, if you need to change the cards fast, then  the noise will be a little loudly; if you don't want any noise when change the cards, we will make the  speed of changing cards much slower.