The most typical system used is the Hi-Lo counting system, where playing cards 2-6 are assigned a price of +1, cards 7-9 are assigned a price of zero, and playing cards 10-Ace are assigned a value of -1. By keeping a running depend of these values, you'll be able to decide when the deck is favorable to the participant or the supplier. Apart from the authorized implications, there are also ethical concerns to remember when using card counting techniques. While some might argue that card counting is a skillful technique that levels the playing field between the participant and the casino, others consider that it goes in opposition to the spirit of truthful play.