What systems do you use for collaborative tracking?

Hey guys,

We've been awarded some funding to give bus passes to students who are enrolled in grant-funded classes.  We hope this will remove a barrier for students with transportation challenges- and lead to increased retention.  We'd like our teachers to be able to give students these bus passes at the end of class- but we need an easy way for them to track which students have received a pass for the day so students who are enrolled in multiple classes don't receive extra tickets.  A spreadsheet seems cumbersome.  I thought a stamp might work- but adult learners might react badly to it.  Have you guys found any tools that are useful for tracking this kind of thing?