The designation indicates that a passenger has been selected for additional screening.
The screening can take place at the airport security checkpoint or elsewhere in the departure process, depending on the circumstances.
Travelers selected for SSSS may experience additional procedures that aren’t part of the standard screening process.
These can include a more extensive inspection of carry-on luggage, additional physical screening, testing or examination of belongings, and questions from security personnel.
The exact procedure can vary.
That’s why one traveler may describe SSSS as a relatively quick additional check while another may experience a longer screening process.
The important point is that the letters are a **security-screening designation**, not a declaration that someone is guilty of wrongdoing.
## Why Would Someone Be Selected?
This is one of the questions travelers ask most often.
Unfortunately, there isn’t a simple public formula that lets passengers determine exactly why they were selected.
