Setting barcode scanner preferences
The Collections Division at the Folger uses Honeywell "Voyager 1250g" barcode scanners to speed up data entry. To make things extra-confusing, Voyager is also the software that powers the Folger's Integrated Library System.
Settings on barcode scanners are changed by scanning specially-created barcodes specific to that make and model. Use this one-page document giving barcodes for the settings most commonly used at the Folger to set your preferences (for best results, print it out, otherwise you'll just be scanning the reflection from your computer screen).
You can also use the full manual on the manufacturer's website,