What is upc check digit

While our check digit calculator is a valuable tool, many aspects of assigning and maintaining compliance require a much more substantial resource. Our GS1 Barcode Support provides personal, comprehensive service to your company. Clients are assigned a personal consultant who will assist with UPC barcodes , GTIN assignments , barcode production, and product information. Click on the image below to view a tutorial video. Identification Labs is the barcode testing and certification division of Bar Code Graphics.

Copy this key. The last digit of all fixed-length, numeric GS1 Identification Keys is a check digit that ensures the integrity of the key. The check digit is calculated using a simple algorithm, based on the other numbers in the key. Find out how to calculate a check digit manually.

Access the GS1 General Specifications GS1 ID Keys give companies efficient ways to access information about items in their supply chains, and share this information with trading partners. If the check digit it calculates is different from the check digit it reads, the scanner knows that something went wrong and either : The item needs to be scanned again to check if the calculation versus the number read was wrong at the first attempt or, If the check digit is not the one supposed to be from the calculation the scanner won't read this barcode at all.

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