Global Document Type Identifier (GDTI)

A GDTI is the GS1 Identification Key used to identify important documents by type. This unique identifier is comprised of a GS1 Company Prefix, a Document Type, a Check Digit, and an optional serial number.

Note: The term “document” is applied broadly to cover any paper or digital file. The issuer of the document is normally responsible for all the information contained within the document, both in a barcode and in Human Readable Interpretation (HRI) and/or an EPC-enabled RFID tag.