We generate orders and print the Picking Slip.
Warehouse staff picks the items for shipping.
Staff next enters the Order # on their UPS Shipping Software.

Here is what we need: We do not want the warehouse staff to use the keyboard. Instead, we would like them to scan the Order # into the UPS system using a bar code gun. If the Order # were printed on the Picking Slip as a bar code, this would be ideal!
How do we do this?