
The Transportation Worker Identification Credential, or TWIC card, is a primary form of identification that can be used at airport security checkpoints. TWIC cardholders can obtain TSA PreCheck, an expedited screening program offered by the Transportation Security Administration (TSA). However, some sources advise against relying solely on the TWIC card for airport security, as it may not always be accepted as a valid form of identification. It is recommended to have other forms of identification available when travelling.
| Characteristics | Values |
|---|---|
| What is a TWIC card? | TWIC stands for Transportation Worker Identification Credential. |
| Who needs it? | Workers who need access to secure areas of the nation's maritime facilities and vessels. |
| Who can apply for it? | U.S. citizens, lawful permanent residents, naturalized citizens, nonimmigrant aliens, asylees, or refugees who are in lawful status. |
| What is the process? | TSA conducts a security threat assessment (background check) to determine eligibility and issues the credential. |
| Can it be used at airport security? | Yes, but it is complicated. It can be used as a secondary ID. |
| Can it be used as a primary ID? | No, it is not recommended as the primary form of identification at airport security. |
| Can it be used for TSA PreCheck? | Yes, active TWIC cardholders can use their credentials to obtain TSA PreCheck. |
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What You'll Learn

TWIC card as a primary form of identification
The TWIC (Transportation Worker Identification Credential) card is a valid primary form of identification at airport security checkpoints. However, there are mixed reviews about relying on the TWIC card as a primary form of identification at airports. While some sources state that the TWIC card can be used as a primary form of ID, others recommend avoiding it due to issues with the system not accepting all allowed forms of primary ID.
TWIC cards are typically used by workers who need access to secure areas of maritime facilities and vessels. The TSA conducts a security threat assessment (background check) to determine eligibility for the credential. U.S. citizens, lawful permanent residents, naturalized citizens, and certain nonimmigrant aliens may apply for the credential.
When travelling, it is always recommended to carry a valid passport as a primary form of identification. While the TWIC card can be used as a secondary form of ID, it is not widely recognised or accepted by all airports and security personnel. Some travellers have reported issues with TSA agents trying to process their TWIC cards through the machine.
To use the TWIC card for TSA PreCheck, active cardholders can enter their TWIC credential identification number (CIN) in the known traveler number (KTN) field of their airline reservation. TSA PreCheck is an expedited screening program that allows travellers to keep their shoes, light outerwear, and belts on, as well as their laptops in their cases and carry-on liquids.
In conclusion, while the TWIC card is recognised as a valid primary form of identification, travellers may encounter issues due to varying levels of acceptance and technical limitations at different airports. It is advisable to carry additional forms of identification, such as a passport or driver's license, to ensure a smoother security process when travelling.
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TWIC card as a secondary form of identification
The TWIC (Transportation Worker Identification Credential) card is a form of ID required for workers who need access to secure areas of the nation's maritime facilities and vessels. It is not a standard form of ID like a driver's license, but it can be used as a secondary form of identification at airport security checkpoints.
When signing up for the TWIC card, the TSA conducts a "threat assessment" or background check. This is a security measure to determine a person's eligibility for the credential. U.S. citizens and immigrants in certain categories may apply for the credential, and it is recommended that applicants enroll a minimum of 60 days before they require a valid TWIC.
While the TWIC card can be used as a secondary form of ID at airport security, it is not always a reliable option. Some agents may not accept it as a valid form of identification, and there have been reports of issues when trying to use it at TSA checkpoints.
If you are considering using your TWIC card as a secondary ID at airport security, it is essential to have other forms of identification with you as well. It is also worth noting that the TSA does not have a standard list of what secondary forms of ID are accepted. Therefore, it is best to bring whatever forms of identification you have available when traveling.
In addition to its use as a secondary ID, active TWIC cardholders can use their credential to obtain TSA PreCheck, an expedited screening program offered at over 200 airports nationwide. To do this, cardholders enter their TWIC credential identification number (CIN) in the known traveler number (KTN) field of their airline reservation.
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TSA's threat assessment and eligibility
The Transportation Security Administration (TSA) conducts a "threat assessment" or background check when an individual signs up for a TWIC card. This card is required for workers who need access to secure areas of the nation's maritime facilities and vessels.
The TSA's threat assessment process includes a review of criminal history and other records to identify any disqualifying offenses or factors that may pose a security threat. For example, extensive foreign or domestic criminal convictions, serious crimes such as murder or voluntary manslaughter, and violations of transportation security regulations are considered disqualifying offenses.
The TSA also recommends that applicants for certain programs, such as the HME Security Threat Assessment, pre-enroll at least 60 days before requiring an eligibility determination due to increased demand and processing times. The HME Security Threat Assessment is relevant for drivers seeking to obtain, renew, or transfer a hazardous materials endorsement on their state-issued commercial driver's license.
TWIC cardholders are eligible for reduced fees in specific states when applying for the HME Security Threat Assessment. Additionally, CDL holders with an active HME security threat assessment may be eligible for the TSA PreCheck Application Program.
While a TWIC card can be used as a secondary form of identification at airport security checkpoints, some individuals have reported challenges with using it as a "real ID." The TSA may not consistently accept all forms of primary identification, and there have been instances where agents struggle to process a TWIC card through their machines. Therefore, it is recommended to carry additional forms of identification when travelling to avoid potential issues.
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TWIC card readers
- The card is authentic and issued by the TSA
- The card has not expired
- The card has not been revoked or reported lost or stolen
- Through a biometric fingerprint match, the person presenting the card is the rightful holder
TWIC cards can be used as a secondary form of ID at airport security, although their effectiveness in this regard is disputed.
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TSA PreCheck™ eligibility
While a TWIC card can be used as a secondary form of ID at airport security, it is not recommended as the sole means of identification. The TWIC card, or Transportation Worker Identification Credential, is a primary form of identification for workers requiring access to secure areas of maritime facilities and vessels.
Now, regarding TSA PreCheck eligibility, this service is ideal for domestic travellers who take fewer than four international trips per year. TSA PreCheck offers expedited air travel security screening for enrolled members. Eligibility requirements include providing identification and proof of citizenship/immigration documents, and the name provided must match that of your airline travel reservations. Children do not need to apply for TSA PreCheck unless they routinely travel alone. When travelling with a family where the adults have TSA PreCheck, children aged 17 and under are eligible without needing their own Known Traveller Number (KTN).
To enrol in TSA PreCheck, you must submit an application and set an appointment. The fee covers eligibility for five years and is associated with the operational costs of the TSA PreCheck Application Program. Most applicants receive their KTN within 3-5 days, but some applications can take up to 60 days. You can check your enrollment application status by email, phone, text, or online through your enrollment provider.
To access the TSA PreCheck lane, ensure your airline boarding pass displays the TSA PreCheck indicator. If you do not have this indicator, you cannot access the lane. If you believe you should have the indicator, but it is not showing, you can reach out to the TSA through various contact methods, including Twitter, Facebook Messenger, Apple Business Chat, or text.
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Frequently asked questions
TWIC stands for Transportation Worker Identification Credential.
The card is required for workers who need access to secure areas of the nation’s maritime facilities and vessels.
Yes, active TWIC cardholders can use their credentials to obtain TSA PreCheck. However, some sources advise against relying on it as a primary form of ID.
TSA PreCheck is an expedited screening program offered by TSA that allows travelers to leave on their shoes, light outerwear and belt, keep their laptop in its case and their food and 3-1-1 compliant liquids/gels bag in a carry-on, in select TSA airport checkpoint screening lanes.
U.S. citizens, lawful permanent residents, naturalized citizens or nonimmigrant aliens, asylees, or refugees who are in lawful status may apply for the credential.










































