A window leaves the workshop, and months later a glass unit shows a fault. Then the questions are simple: which serial number went into which order, and which other windows got glass from the same batch? The answer depends on what was written down at the assembly station.
Often nothing was, or it was written by hand: serial numbers copied from labels onto the order sheet and typed into a spreadsheet later. Long numbers get copied wrong, sheets get lost, and on a busy day nobody types them up.
If the order sheet carries a barcode and the components arrive with their serial or batch number on a barcode label, a phone at the assembly station can do the writing. DataScan links every component you scan to the order scanned before it and exports the list as a CSV or Excel file for import into your ERP or for your quality records.