GTINs are the foundation of the GS1 System and identify all “trade items,” which include products and services that are sold, delivered and invoiced at any point in the supply chain. GTINS are typically found at point of sale (encoded in the U.P.C. barcode) and on cases and pallets of products in a distribution or warehouse environment. They can be encoded into various types of GS1 barcodes and Electronic Product CodesTM (EPC), which are programmed into Radio Frequency Identification (RFID) tags. To learn more about GTINs, read An Introduction to the Global Trade Item Number (GTIN).

Serialized Global Trade Item Number (SGTIN)
An extension of the GTIN, the SGTIN identifies individual trade items that correspond to a particular class of object. An item serial number is added to the GTIN number to help identify these items.