We just started using the 'cash equivalent' fuel card that we can use at Love's. Actually, the company that we went through gave us two cards, one for Love's and one for everywhere else.
We start the pump with the card, punch in two secret numbers, then fuel up. I take a picture of the pump (receipt) with my i-phone and off we go.
The funds are removed from my checking acct. at the end of the next business day with an email receipt. We get 10 cents off the cash price at Love's and 7 cents off the cash price (I think) at all the other stations.
I was reluctant to give my checking acct. number after all these years but finally decided to get into the 25th century. :p
MM.