Barcode
A barcode is a scannable product identifier, from retail GTINs to internal SKU codes driving warehouse scans.
What a barcode is
A barcode is a scannable encoding of a product identifier: the retail codes, UPC and EAN, encoding a GTIN that names the exact product, plus internal codes stores print for their own bins and SKUs.
Why barcodes matter
Scanning replaces typing and guessing everywhere goods move: receiving, picking, packing, counting, checkout. The same GTIN also identifies products to marketplaces and shopping feeds, matching your listing to the catalog entry.
Barcodes in an ecommerce operation
- GTINs on products for marketplaces and product feeds
- Internal SKU barcodes on bins and shelf locations
- Scan verification at pick and pack
- Carrier labels driving the shipping leg
Frequently asked questions
Where do product barcodes come from?
Retail GTINs are licensed through GS1, the standards body, so codes are globally unique; marketplaces increasingly verify against the GS1 registry. Internal-only barcodes for bins and SKUs, you print yourself.
Does every product need a GTIN?
Selling on marketplaces and shopping feeds, usually yes, with exemption processes for handmade and private label cases. Your own store alone, internal SKUs suffice.