Third-party vendors may apply these requirements to their own commercial 2D barcode generators, which will improve accuracy and efficiency at our Lockbox facility.

Depending on which internet browser you use, the barcode may not be visible when you open the form. We will process all forms with or without a barcode at the bottom of the page.

• General Barcode Specifications (PDF, 218 KB)
• I-131 Form and Barcode Requirements (PDF, 136 KB)