The 2D barcode laser etching software includes algorithms that prevent the barcode generator from ever counting backwards, subsequently preventing the re-etching of any previously generated barcode. To verify the above procedure, several quality control checks are performed on the 2D barcodes including:
- Checking for light transmission through the barcode as light transmission will reduce readability
- Inspecting the barcode under magnification
- Reading the barcode on a full rack 2D barcode reader
- Checking the barcode against a database of previously etched 2D barcodes
As the above quality control steps are completed, defective storage tubes are discarded, replaced, and re-checked, ensuring that the 2D barcodes are 100% readable and have not been previously used. This quality control process is the reason why we cannot guarantee sequential 2D barcode printing within a single rack of 2D barcoded products.