On an electronic boarding pass in 2026, TSA PreCheck is indicated by a specific, high-visibility logo or text string, usually located in the upper right or upper left corner of the pass. It typically appears as a blue or black "TSA Pre✔®" logo or simply the text "TSA PRE" in a bold font. This indicator is encoded into the QR code or barcode that the TSA officer scans at the checkpoint. In the latest 2026 mobile app updates for airlines like Delta, United, and American, the indicator is often placed near the passenger's name for quick verification. It is important to note that you cannot simply show your PreCheck ID card or KTN (Known Traveler Number) to the officer; the "PreCheck" status must be printed or displayed on the boarding pass itself to be valid for that specific flight. If it doesn't appear, it usually means your KTN was not entered correctly during booking or there was a name mismatch between your airline profile and your government-issued ID.