Is there a card reader that can read two different cards?

We recently replaced all of our students ID cards with new ones that has a 6 digit number assigned to them.  Our faculty and staff still have the old cards that have a 5 digit number.  Is there a card reader out there that we can get and program to read both of these cards?  Right now, we have 2 separate card readers at our print stations.  One programed to read the new cards and one to read the old ones.