Redress number vs. Known Traveler Number: Understanding the difference

Quick insights

• Redress Control Numbers (redress numbers) and Known Traveler Numbers (KTNs) are unique identifiers issued by the government that are used by the Transportation Security Administration (TSA) to help screen travelers.
• Redress numbers mark individuals who have previously been misidentified as being on a watch list while traveling.
• KTNs identify passengers who are part of the Truster Traveler Program (TTP) TSA PreCheck^®.

In the world of customs and border protection, you may find some of the terminology unclear. For example, you may have heard both of redress numbers and (KTN) in the context of airport security. Below, we cover what each terms mean and how they differ.

What is a redress number?

Much like other travel identification numbers assigned by the government, a redress number is designed to help expedite the border security process.

Redress numbers are issued by the Department of Homeland Security to individuals who have previously experienced difficulties during screening at transportation hubs such as airports. These difficulties may include watch list issues, screening problems at ports of entry and situations where a traveler believes they have been unfairly or incorrectly delayed, identified for additional screening or denied boarding.

If you do think you're eligible for a redress number, you can apply online through the Department of Homeland Security's website. After submitting your application, it will become subject to approval, which can take up to 50 business days.

Upon approval, you will receive your redress number, which you'll be able to use when traveling. This may help you avoid difficulties at security screenings going forward.

Note that if your security issues relate to a criminal record or an instance of excessive intoxication, you will likely not be eligible for a redress number.

What is a Known Traveler Number?

Separate from a redress number, a KTN is issued to people who apply to and are approved for TSA PreCheck^®, program that allows approved travelers to access potentially expedited security lanes at some U.S. airports.

Additionally, while the terminology is slightly different, a similar identification number is issued to those who apply to and are approved for Global Entry, NEXUS and SENTRI, programs that allow for expedited access into the U.S. via air, land or sea. In this case, you'll be issued a PASSID number, which is entered in the same place as the KTN when booking air travel.

Like a redress number, a KTN is also issued by the Department of Homeland Security, and recipients must go through an application and screening process to be approved. This then grants entry to TSA PreCheck lanes at airports, which may allow travelers to go through airport security without removing liquids, laptops, shoes, belts or light outerwear.

Redress number vs. KTN: Differences and benefits

The main differences between a redress number and a KTN are the circumstances in which they’re issued and used.

A redress number relieves part of the stress of traveling by making it less likely you will be targeted for additional screening, or delayed or denied boarding or entry. Ultimately, the goal of a redress number is to create a smoother traveling experience for those who have had difficulties with security in the past. It works to correct the potential misidentification of travelers as high risk, thus complicating their experience through security.

By contrast, a KTN allows travelers to access specially approved security lines and screening processes designed to expedite their wait time. Additionally, unless you are an active member of the military, you pay for this benefit. A redress number, on the other hand, is free.

Some credit cards may allow you to receive reimbursement for TSA PreCheck application fees. Check your credit card’s guide to benefits to see if you are eligible for this benefit. Note that many credit cards that offer this benefit have an annual fee.

In summary

If comparing a redress number vs. a KTN, you'll find the “why" behind the two numbers the biggest difference. Redress numbers are intended to correct misidentifications that may lead to security issues for certain travelers, while a KTN is a travel benefit you can pay for. Ultimately, their goal is the same—to help make your travel a little bit smoother.