A database must be set to track attendance in order to utilize Jackrabbit's Barcode Scanner functionality.
Barcode readers allow students to scan a card with a barcode to record attendance date & time. This feature uses the Student ID field (on the Student Summary page) as the barcode number. Jackrabbit works well with most barcode readers. The reader must be able to simply return a number with the (Enter key) at the end - most scanners can do this. This simple scanners usually do not require driver software installation and simulate someone typing in the barcode number and hitting the (Enter key).