Building reliable barcode lookup for a nutrition app A successful scan is not the same thing as a successful product lookup. The camera may decode a valid GTIN that your database has never seen, or multiple source rows may share the identifier. Treat “not found” and ambiguity as normal product ...
Source: [Dev.to](https://dev.to/dietly/building-reliable-barcode-lookup-for-a-nutrition-app-5926)