So, V. You go to Chinook Winds, run a 20K wager on the 98% video pokers. It's a theoretical $400 loss. But they send you $100 a week in freeplay for 3 months. It turns that $400 loss into an $800 win.
So next time you decide to take your wife's card with you, run 20K on your card, then run 20K on her card, and they send you each $100 a week in freeplay for 3 months.
Whoopeee!! You are now a multi-carder. You've doubled your income on the game. Since you know your wife's pin number you have no problem running off her freeplay.
Husbands and wives were the original multi-carders. Dancer used to write about using his wife's card all the time.
But one day your daughter comes over to visit. The lightbulb goes off in your head. "Hey, sweetheart. Do you think you could go down to the casino and sign up for the player's card and give it to me....along with the pin number? Oh, and take your husband too."