Pocket Inventory 5.0
the author of this app says:
Pocket Inventory uses a Symbol SPT-1500 Palm III handheld with a built-in barcode sensor to scan and count your inventory. Once you've scanned all of your inventory, Pocket Inventory will synchronize your data with an MS Access or dBase database. To speed things along, you now you can take advantage of SpeedScan for barcode scanning and a plus/minus button for easy inventory counting!