To all that sell and use the Square credit card swipe. I had something happen to me this weekend that had not happened before. I was trying to swipe a credit card and the card did not fit in the Square. After trying a couple of times I looked inside of the Square. To my surprise there was a dime inside. I used my pocket knife and VERY LIGHTLY worked the dome out.
From now on I will keep in my other pocket.
All went well the rest of the day