The last number in a barcode is known as a "Check Digit" which ensures that the barcode has been generated correctly.
You can read more about the structure of barcodes and check if they are correct at the link below:
The last number in a barcode is known as a "Check Digit" which ensures that the barcode has been generated correctly.
You can read more about the structure of barcodes and check if they are correct at the link below: