Borderlands 3: Here's a List of All Borderlands 3 Shift Codes
How Borderlands 3's Shift Codes and Golden Keys work - Polygon
Borderlands on Twitter: "Use these SHiFT codes to unlock 5 Golden Keys in Borderlands: The Pre-Sequel! [Active through 10/09] BL:TPS PC / Mac / Linux: 5WKJB-XKJCF-BCT33-B3TJB-ZW5H6 Xbox One or Xbox 360: 5WKJB-XKJHB-FFX36-C6TJB-ZW53H