DVD Machine Trick

I had a patron who was using an old ALD card (blue and white, with a barcode sticker). She had reserved DVD machine movies using the ALD website, so she had typed her barcode in. When picking up her movies, the machine was not reading her barcode. I tried and tried, but could not get it to work. She did not want to change library card numbers, so a new card was not a choice for her. In a last ditch effort, we photocopied her barcode, it came out nice and clear. It worked!!!! So this is a trick to try when a patrons card is not working, and they do not want a new card.