I went to Meijer the other day, and wanted to pay with my credit card. It didn't seem to work. This happens on rare occasions. So, the cashier mentioned I should try it backwards, and other actions. None worked. Then, he asked for my card. He took a plastic shopping bag, and put my card in it, and swiped it again through the reader. This time it worked! I asked why, he said he didn't know, but someone showed it to him. I don't know why that worked. I am wondering about it and further wondering how a new cashier would look at me if I propose such a solution in the future.