Yes, you can and should add your passport to your CLEAR account, especially in 2026 as REAL ID requirements have fully taken effect. CLEAR+ members can upload their U.S. passport to the "Vault" tab in the CLEAR mobile app. Adding your passport serves several purposes: it acts as a secondary form of identification to verify your identity at the airport kiosks, and it fulfills the requirement for a "REAL ID-compliant" document for domestic travel within the U.S. if your driver's license doesn't yet have the gold star. Starting February 1, 2026, travelers without a REAL ID or a passport in the CLEAR system are subject to the TSA ConfirmID process, which involves a $45 fee and longer manual verification. By having your passport digitalized in your CLEAR profile, you ensure the fastest possible path through the security "Fast Lane" regardless of updated state-issued ID regulations.