Thus, in addition to our personal information, the ticket may also have an SSSS code. Because of this, the passenger cannot print the card at special machines and will have to go through counters.

But what does the mentioned code mean and why, when it is written on the card, the owner must be checked by the police?

“Secondary Security Screening Selection” or in Greek secondary screening is carried out by the Transportation Security Administration and can take even more than half an hour.

The message can sometimes be found on the boarding pass for flights within the US or to the US, and it means that for some reason you are keeping a close eye on security.

In general, it has been observed to appear more frequently on tickets booked at the last minute if the payment was made in cash or if the traveler’s country of destination is “high risk”.

While the code is usually printed on the boarding pass of those on the FBI’s terrorism watch list, the selection is often random. It may appear because you booked a ticket at the last minute or booked a non-return ticket to a high-risk country.

According to El Pais