Scanner Calibration
If you are having issues scanning very small barcodes, or scanning an individual barcode from a list of closely printed barcodes, then try the Picklist Mode on the scanner.
Exit ASPluris
Open the App drawer (swipe up)
Select ReaderConfig
Select Default configuration
Select Scanner Preferences
Scroll down to Picklist Mode
Tick on Picklist Mode
Exit ReaderConfig and re-open ASPluris.