What does SSSS mean on my boarding pass?

What is SSSS? Secondary Security Screening Selection, or SSSS, is a designation by the Transportation Security Administration (TSA) that flags passengers for extra security screening. SSSS can happen on any flight to, from, or within the U.S., including inbound international flights.



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A Secondary Security Screening Selection or SSSS designation on your boarding pass means that you've been picked for a secondary security screening. The Transportation Security Administration (TSA) may select passengers for SSSS on flights from, to and within the U.S.

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If you are on the Selectee List you will automatically be chosen for additional screening each time you fly. Being on one of these lists or even if you share the same name with someone on one of these lists means you are likely to receive a SSSS on your boarding pass.

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TSA doesn't publish specific guidelines on why certain passengers get SSSS markings on their boarding passes. Anecdotally, passengers with unusual travel patterns, one-way international flights and travelers to certain countries get it the most. It is also possible that TSA assigns SSSS markings randomly.

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The airport official swabs the outside of your hand luggage liberally, before inserting the swab into a mysterious machine. This process, known officially as explosive trace detection, is doing just that—checking to see if your luggage has come into contact with a bomb or explosive material.

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TSA protects transportation systems: they scan your luggage, ensure your ticket is valid, and provide airport security. The only reason they might be interested in your phone is if it looks suspicious.

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You can provide your Global Entry number/TSA Pre-Check PASSID number (Known Traveler Number) when checking in online and at the check-in desk at the airport.

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Any airline passenger with the letters “SSSS” printed on their boarding pass have been selected for extra security screening by airport security. Used by the Transportation Security Administration (TSA), the letters SSSS stand for Secondary Security Screening Selection or Secondary Security Screening Selectee.

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The Upgraded Boarding option is displayed below the flight's itinerary. NOTE: Upgraded Boarding can only be purchased within 24 hours of the flight's departure time depending on availability. Upgraded Boarding sales will end 30 minutes before departure.

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The measuring is done against a solid background that X-rays can't penetrate. The image receptor is equipped with a material that lights up when exposed to X-rays in an airport scanner. So objects that block X-rays—such as your phone or laptop—will show up as dark on the image while everything else will be bright.

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They use electromagnetic waves, which are said to be harmless. From a privacy point of view though, they're even better. A monitor shows a generic cookie-cutter-like outline of a person and highlights any potential threats. The image is the same, regardless of gender, height, or body type.

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Can airport scanners see pills? Even if the pills are contained in plastic, non metallic or metallic bottles, the answer is yes. The airport scanners have no problems finding the pills that you are travelling with, liquid form or not.

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Conclusion: Why do I set off airport body scanners groin? Airport body scanners in the groin area often detect metal in the form of piercings, implants, or joint replacements. However, metal can cause anomalies within the body, which could trigger the scanner and result in a false positive result.

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Various nitrates are often used in the making of explosives (e.g., trinitrotoluene, a.k.a. TNT) and they're checking to see if you've been handling any recently. I find it interesting that they were checking hands—perhaps that's more accurate than some of the other sampling sites they've used in the past.

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How Do I Get TSA Precheck for Free?
  1. Aeroplan® Credit Card.
  2. The Platinum Card® from American Express (Terms apply, see rates & fees)
  3. The Business Platinum Card® from American Express (Terms apply, see rates & fees)
  4. Bank of America® Premium Rewards® credit card.
  5. Capital One Venture Rewards Credit Card.


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The application fee for TSA PreCheck® is $78 for 5 years.

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