Home›Articles›What the last digit of a UPC protects againstArticleWhat the last digit of a UPC protects againstArticlesConnectionsSourcesComments (0)Reader Challenges (0)ConnectionsArticle OnUniversal Product Code, Concepts Well-attested SourcesUniversal Product Code (Wikipedia)Check digit calculationQuote, Check digit calculationUPC-A can detect about 89% of transposition errors. Specifically, if and only if the difference between two adjacent digits is 5, the UPC-A can't detect their transposition.View the SourceAtlas Article Vocabularytier 1AtlasComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.