The full 14-digit GTIN is achieved on a data carrier (UPCs, etc.) of shorter length by padding thenumber with left-justified zeros out to 14 digits. If you need to create a bar code symbol, you will need to become a member of the Uniform Code Council, Inc. (UCC). Your company will then be assigned an identification number (your Company Prefix). You will need this number to create your own UPCs.
| Data Structure | Original Data (number) | Full 14 Digit GTIN |
| EAN/UCC-8 | 01234567 | 00000001234567 |
| UCC-12 (UPC) | 012345678912 | 00012345678912 |
| EAN/UCC-13 | 0123456789123 | 00123456789123 |
| EAN/UCC-14 | 012345467891234 | 01234567891234 |
The UPC is not going away and nothing has really changed in terms of the bar codes that will be used. GTIN is new terminology, not a new standard. GTIN is the term referring to how the data is stored, i.e., padding the item number with zeroes to a uniform length. Most scanners in use will already scan any bar code within the GTIN family.