
TSA PreCheck is a US government program that allows travellers deemed low-risk to pass through security at US airports more quickly. The program is available to US citizens and legal residents without a criminal history. To enrol, travellers must complete an online application and an in-person interview, costing $78 for five years. TSA PreCheck members can use dedicated security lanes, and are not required to remove their devices, liquids, or shoes. However, no individual is guaranteed expedited screening, as the TSA uses unpredictable security measures throughout the airport.
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What You'll Learn

TSA PreCheck® indicator on boarding pass
The TSA PreCheck® indicator on a boarding pass is a visual marker that confirms that a passenger is eligible for TSA PreCheck® on their flight. The indicator will be displayed on the pass if the passenger has provided their Known Traveler Number (KTN) when making their airline reservation. This number is essential, as there is no TSA PreCheck® card, and the indicator must be displayed on the boarding pass to access the lanes.
The TSA PreCheck® indicator will appear on the boarding pass if the passenger's KTN is valid and active. If the indicator is missing, passengers should first check that their KTN is up-to-date. If the KTN is still active, they should confirm with their airline that their KTN, name, and date of birth are correct and that the airline participates in TSA PreCheck®.
Passengers can also contact the TSA for assistance through Twitter, Facebook Messenger, Apple Business Chat, or by texting "Travel" to AskTSA (275-872). The TSA Contact Center can be reached at (866) 289-9673, and they also offer an online form for queries.
It is important to note that no individual is guaranteed expedited screening, as the TSA employs unpredictable security measures throughout the airport. All travellers will be screened, and children under 12 may accompany an enrolled parent or guardian in the TSA PreCheck® lanes without restriction.
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Unpredictable security measures
The TSA uses unpredictable security measures, both seen and unseen, throughout the airport. These measures are implemented to complement the security system, defeat the opponent, and improve human factor aspects of the security system. By varying security procedures and processes, a non-transparency of the system is intended, reducing the value of insider knowledge. This makes it difficult for potential attackers to plan and execute an attack.
In addition to these unpredictable measures, the TSA also employs pat-down procedures to determine whether prohibited items or other threats to transportation security are concealed on a person. Even passengers who normally receive expedited screening, such as TSA PreCheck™ passengers, may at times receive a pat-down. The officer will advise the passenger of the procedure to help them anticipate any actions before they feel them.
The TSA works closely with intelligence and law enforcement communities to adapt security procedures based on evolving threats. They also count on the traveling public to report unattended bags or packages, individuals in possession of threatening items, and persons trying to enter restricted areas or engaging in other suspicious activities.
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TSA PreCheck® enrolment
Enrolling in TSA PreCheck® is a quick and straightforward process. To begin, it is recommended that you review the various DHS trusted traveler programs: TSA PreCheck® Application Program, Global Entry, NEXUS, or SENTRI, to ensure you meet the eligibility requirements and determine the best program for you. For example, if you travel internationally four or more times a year, Global Entry may be a better option.
Once you've determined that TSA PreCheck® is the right choice, you can enroll in three simple steps. First, visit tsa.gov/precheck to select an enrollment provider that meets your needs and has a location near you. You can pre-enroll online and schedule an appointment, or simply walk into an enrollment center without an appointment. Enrollment locations such as CLEAR, IDEMIA, and Telos offer extended hours and are open seven days a week.
The second step is to complete the online application, which takes approximately five minutes. During this process, you will provide basic information and select your preferred enrollment provider. After submitting the online application, you will proceed to the in-person enrollment, which typically takes about ten minutes. At the enrollment center, a provider will collect your biometric data, including fingerprints and a photo, verify your identity documents, and collect payment.
Finally, once your application is approved, you will receive your Known Traveler Number (KTN). This number is crucial, as it must be added to your airline reservations to receive TSA PreCheck® benefits. With your KTN, you can enjoy expedited screening at the airport, avoiding the need to remove your devices or shoes during security checks.
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TSA PreCheck® lanes
TSA PreCheck® is a US government program that allows travellers deemed low-risk to pass through an expedited security screening process at US airports. The program is available to all US citizens and legal residents without a criminal history. To enrol in the program, applicants must complete an online application and an in-person interview, at a cost of $78 for five years.
When using the TSA PreCheck® lanes, travellers are not required to remove their shoes, laptops, liquids, or jackets for separate screening. This results in a quicker trip through security, reducing the time spent standing in line. Children 12 and under may accompany an enrolled parent or guardian in the TSA PreCheck® lanes without restriction, while children 17 and under can join an adult with TSA PreCheck® when it appears on their boarding pass.
To enrol in TSA PreCheck®, individuals can follow three main steps: completing an online application, undergoing fingerprinting and document verification at an enrolment location, and submitting payment. The entire process can be completed in as little as 15 minutes, including the online application and in-person enrolment. Renewal can be done online in approximately 5 minutes by selecting an enrolment provider and completing the renewal process.
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Known Traveler Number (KTN)
A Known Traveler Number (KTN) is issued to individuals approved for TSA PreCheck® expedited screening. The KTN is a 9- or 10-digit number that must be added to the KTN field when booking airline travel reservations to have the TSA PreCheck® indicator displayed on the boarding pass. This number can be a combination of letters and numbers and typically begins with TT, TE, or AC, depending on the enrollment provider.
For TSA PreCheck® Application Program members, the KTN can be looked up here. For members of other trusted traveler programs, such as Global Entry, NEXUS, or SENTRI, the PASSID obtained from the Trusted Traveler Program website serves as the KTN.
To receive TSA PreCheck®, travelers must include their KTN in their airline reservation. This can be done by entering the KTN in the appropriate field when booking a reservation or by contacting the airline after booking. The TSA PreCheck® indicator must appear on the boarding pass for travelers to access the TSA PreCheck® lane at the airport.
If the KTN is entered correctly in the reservation, but the TSA PreCheck® indicator is missing from the boarding pass, travelers can confirm that their membership is still active and that their KTN, name, and date of birth are accurate with the airline. They can also reach out to TSA through Twitter, Facebook Messenger, Apple Business Chat, or text for assistance.
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Frequently asked questions
TSA PreCheck is a US government program that allows travellers deemed low-risk to pass through expedited security screening at US airports.
To enrol in TSA PreCheck, you must fill out an online application, complete an in-person interview, and pay a \$78 application fee. Your membership will last for five years, after which it can be renewed for additional five-year periods.
Travellers with TSA PreCheck can go to the dedicated TSA PreCheck lane at security. They will need to show their boarding pass with their Known Traveller Number (KTN). In the security screening, they will not need to remove devices, liquids, or shoes.



















