The other day I was standing in line and the credit card machine wasn’t working. The guy standing in front of me was trying to get his Master Card to slide through the unit twenty different ways. After about ten minutes, the line behind me starting slowly growing and the crowd was getting restless. Like Superman, the store manager swooshed-in, wrapped a plastic shopping bag around the card and ran the it through the machine. Presto! The credit card terminal was reset at the point of purchase.
The next time you are stuck in a line and your Visa or Discover card isn’t working, try the plastic bag trick. I also have been told that a thin piece of paper, like a receipt, can be held over the credit card’s magnetic stripe to make the transaction go through.