The UPC Code consists of 14 digits: The lead digit, or Number System Character ("0") identifies the type of merchandise The 5-digit manufacturer's code ("74470") identifies the national distributor or independent publisher The 5-digit bipad number ("03462") identifies the unique publication The check digit ("9") is derived from the previous 11 digits and is used to verify their correctness The add-on, or issue code ("04") identifies the unique issue UPC Codes Must Be: Placed on the front cover of the magazine (lower left-hand corner) On a white background At 80% magnification or above (100% is best) Fully scannable - good resolution Changed when frequency or price is changed Ordered from your distributor or directly from the uniform code council (UCC) Always printed at original film size Without a border Unique every issue