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<p><big> Examples </big></p>
<p><big> UPC, EAN, GLN, GTIN, numbers administered by GS1 </big></p>
<p>The final digit of a <a href="page.php?w=Universal_Product_Code">Universal Product Code</a>, <a href="page.php?w=International_Article_Number">International Article Number</a>, <a href="page.php?w=Global_Location_Number">Global Location Number</a> or <a href="page.php?w=Global_Trade_Item_Number">Global Trade Item Number</a> is a check digit computed as follows:</p>

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# Add the digits in the odd-numbered positions from the left (first, third, fifth, etc.--not including</p><p>
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