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Leading Digits – UPC-A Barcodes

The first digit of a UPC-A Barcode is number system character. The following table shows you what different number system characters mean

0:      Standard UPC number
1:      Reserved
2:      Random weight items (fruits, meat, vegetables, etc.
3:      Pharmaceuticals
4:      In store marketing for retailers (a store can set up unique barcodes for themselves, but no other store will be able to read them)
5:      Coupons
6, 7,8   Standard UPC number
9:      Reserved