Poor quality barcodes -- no matter the cause -- result in no-reads. Once the cause of the barcode problem is defined, it can be addressed by taking simple preventive measures. A high-performance barcode reading system will ensure the best read possible and protect a company's time and data. Omron published a highly-informative downloadable white paper on the optimizing bar code readability. You might be surprised at some of the reasons bar codes become unreadable, and how simple the fix can be.