Someone used an old copycard in the vendor printer and left when it didn't work and the card was stuck in the machine. Another library user, trying to use the correct card, was unable to do so until we were able to get the old card out with the pliers.
The library user suggested a sign immediately in front of the vendor card printer slot saying:
Use only a card that looks like this (image of current copy card.)
Earlier this week a student tried using his student id card in the vendor printer machine, and it got stuck, which I heard happens about once a week. I think the student tonight has a good suggestion about a needed sign. Perhaps we could add that such cards are available for purchase in Room 309.