Wow, I can't believe the bickering here over something so petty. This story reminds me of when I was 16 and working as a cashier at Kroger. During the holidays (October and November) they had a deal where you spend $500 and get a free turkey or something stupid like that and they would track it using your shopper’s card. Anyway, for the prior 6 months or so when a customer didn't have their card, I would scan mine. I can’t remember one customer getting mad over the fact that I would scan my card so they could get discounts but that's beside the point. One day in early November I was called into the manager’s office with another cashier and he presented me with a sheet of paper saying that the card that was registered to me had spent $12,XXX and another cashier had spent $5,XXX. He asked me how I had spent that much money and I told him the truth about what I was doing and what I had done since I started working the cash register. Keep in mind I was 16, living with my parents in an upper class neighborhood, had 2 cars, and could care less about free turkey. My mom had shopped at this grocery store for as long as I could remember and most of the management knew her as she was in there at least twice a week and would do special orders etc., often. The manager was cool about the whole thing and just asked us not to redeem the free turkeys. Given my spend I could have had 24 turkeys and the manager jokingly said that I alone would clean out the store’s inventory.

Anyway, I from the OP's post it does suggest that the cashier is defrauding the company, but for what, 2 miles every time someone fills up without their own card? Give me a break; some of you are taking this way too seriously. Chances are the company is able to track this and this guy(kid?) will likely be figured out before he even has enough miles for a one way coach ticket if he is even there long enough to accumulate the miles.