Vic - The Slot Club Rep's roam through the casino, looking for people playing the machines without a card. They then stop and ask the person if he/she would like to sign up for a Players Card. The "BK" on the card is the initials of the club rep, and AUG is for the month that the player was signed up. The RIO started this system, and now it seems that Harrah's has picked up on it.