What pops up when you scan a barcode that is on a clothing tag?

What pops up when you scan a barcode that is on a clothing tag?
like the barcode part that is usually on the tag that tells the price
does it just only tell the price? or the day that it was bought?

Best answer:

The barcode on the item only identifies the item.
The computer system scanning the item can save whatever info is designed into the system.