Your Bluetooth scanner acts like a keyboard wedge to your smartphone. FBAScan app has no knowledge of your Bluetooth scanner. When you scan a barcode, the scanner captures the barcode and uses its own software to translate barcode into ISBN or UPC number. The scanner then uses HID or SPP mode to communicate with the smartphone to transfer the number to the current app. If the FBAScan app is the current app on your phone, then the number will show up in the FBAScan app.
It is possible that your Bluetooth scanner cannot translate the barcode into ISBN or UPC number correctly. You will see the scanner adds some letters to the number. When the scanner enters a non-digit letter into the FBAScan app, it makes the app think you want to do a title search, so it will enter NF (Not Found) mode to perform a title search.
- You can open the Email app on your phone, then scan the same barcode into your Email app to verify the scanner can convert barcode to the number correctly or not.
- When you see the non-digit letter in your Email app as well, then it is the scanner problem.
- You can factory reset the scanner based on the scanner manual, then pair the scanner with the phone again.
- If the scanner cannot convert barcode correctly, then the scanner is defective and you need to get another scanner.