How do I get the fist and last checksums of a UPC-E barcode to output when I scan a UPC-E code?

How do I get the fist and last checksums of a UPC-E barcode to output when I scan a UPC-E code?

To get the first and last checksums of a UPC-E barcode to output when scanning UPC-E codes, scan the following 2D code and it will enable the checksums to out after scanning UPC-E Codes: