The warehouse management system identifies every SKU by its barcode at each step — receiving, put-away, picking and shipping. Scanning is what keeps the right item and the right quantity matched to the right order, in the same way a convenience-store cashier scans every item at checkout. Almost all retail products already carry an international barcode (EAN/GS1). Each distinct product or variant needs its own unique barcode; the same code must not be shared between different items, otherwise the system cannot tell them apart and mis-picks become likely.

There is no restriction on what the barcode contains — you can either apply for an international barcode (EAN/GS1) or use your own internal code. There are two ways to handle it:

1. You apply the barcodes before sending goods in. Print and stick a barcode label on each item so the goods arrive scan-ready.
2. Quick Logistics applies them for you. We can print and attach barcode labels as a value-added service, charged per piece (see the fee schedule on the Pricing page).

If you are not sure which barcode format to use, contact our team and we will help you set it up.