Xyl2k/TSA-Travel-Sentry-master-keys: 3D-Printed TSA Master Keys Reviewed

What Xyl2k/TSA-Travel-Sentry-master-keys actually is

The repository is a set of 3D model files, not software. The top level holds TSA001.stl through TSA007.stl, a matching stubby variant for each number, a Safe_Skies/ directory, an IGES/ directory, the README, and the licence. The README describes the project as a "reproduction attempt" made after pictures of TSA master baggage keys were leaked by the Washington Post and after Travel Sentry published PDFs of the passkeys on its own site. The intended audience is narrow: people who can print the models and want to test them against real locks, plus researchers studying master-keyed systems. The README cites security researchers who have "long warned" about master-keyed locks, and notes the TSA's position that the locks affect theft prevention rather than airline safety.

How the STL set is organised and what the stubby files change

Each Travel Sentry key exists in two forms. The plain file, such as TSA007.stl, is the full-length model. The _stubby version is a shorter variant contributed by MS3FGX, which the README says "appear to still work fine". The Safe Skies key is a separate case: the README states that Safe Skies manufactured TSA-approved locks under its own standard and competed with Travel Sentry, and that all available information indicates only one override key exists for that entire system. That key was reverse-engineered from the bitting by @darksim905 and Nite0wl and presented with @j0hnnyXm4s at the 11th Hackers of Planet Earth conference in New York City in July 2016. The IGES/ directory holds the same geometry in a CAD interchange format rather than print-ready STL, which matters if you want to modify the blade instead of printing it as-is.

Printing a key: from STL to a test fit

There is no install step, because there is nothing to install. The README gives no slicer profile, no layer height, and no material recommendation, so the workflow below is limited to fetching the model and slicing it yourself.

git clone https://github.com/Xyl2k/TSA-Travel-Sentry-master-keys.git
cd TSA-Travel-Sentry-master-keys
ls TSA00*.stl

You should see the key models listed, including the stubby variants. Pick the number that matches the notation on your lock's keyway, then slice it in your own tool. The README's only guidance on accuracy is procedural: if a printed key does not work, first use a caliper or another highly accurate device to check that the print matches the model, because humidity, expansion and ambient room temperature can affect print size. If the print is accurate and the key still fails, the README asks you to open an issue naming the problem file and describing the fault in terms such as "Too wide for the keyway" or "Too tall for the keyway", upload a picture of the lock's keyway, and, if you hold the original keys, supply shoulder-to-tip length, shoulder height and blade width.

The TSA006 caveat and other reasons a print may fail

The README flags one key as a likely dead end. TSA006 "may never work", because the depth of its dimples is not known, and consumer-grade 3D printers may not be able to reproduce such fine detail. That is an admission from the project itself, not a reviewer's guess. The broader warning is that the keys "have not been widely-tested", with reports that many do work from at least one source and a video cited from Ars Technica. For anyone outside a research context, the practical failure mode is dimensional: a model that is geometrically correct can still be unusable after printing if the printer's tolerance drifts. The README treats that as the first thing to rule out, which tells you the project expects failed prints to be common. A second limitation is scope: this is a reproduction of published key geometry, and the README does not claim the models cover every lock sold under the TSA programme.

Why the licence rules out most commercial uses

The repository is released under the Creative Commons Attribution-NonCommercial 3.0 Unported License. You may copy, redistribute, remix and build on the models, but attribution is required: you must credit all contributors, link the licence, and indicate whether changes were made, without suggesting that the licensors endorse your use. The NonCommercial term is the constraint that matters for anyone thinking about selling printed keys, and the README states it plainly. There are no releases and no version tags in the repository, so there is no upgrade path to plan for beyond pulling the branch again. The last push was on 2026-05-18, which is recent enough that the files are not abandoned, but the project has no release artefacts and no changelog to consult.

Where this fits against buying a TSA master key set

The obvious alternative is buying a physical TSA master key or key set rather than printing one. The difference in approach is fundamental. A purchased key arrives as a finished metal object with tolerances set by a manufacturer; this repository gives you geometry and leaves the manufacturing step, and its accuracy, to your printer and your calibration. The README's own problem-reporting flow assumes you will measure the printed part against the model, which is work a buyer never does. That makes the repository the better choice for someone who wants to understand or modify the shape, and the worse choice for someone who simply needs a key that turns. The README also notes that consumer-grade printers may not manage the finer details, so the trade is not only cost against convenience but capability against convenience.

Who should print these files, and who should not

Print these models if you are a locksmith, a security researcher, or a hobbyist with a calibrated printer and a caliper, and you want to examine how master-keyed luggage locks behave. Do not start here if you need a working key today, if you only have a low-detail printer, or if you intend to sell what you print, because the NonCommercial term forbids it. Before you commit time, check the keyway notation on your own lock against the file names, and read the TSA006 warning again: the project itself says that key may never work. If you do print and the key fails, the README's issue template asks for a photo of the keyway and the original key's shoulder-to-tip length, shoulder height and blade width, so gather those measurements before opening an issue.

Editorial conclusion

Adopt this repository only if you already have a 3D printer, a caliper, and a reason to study master-keyed luggage locks; the README itself warns the keys have not been widely tested and that the TSA006 dimples may be beyond consumer printers. If you want a working key in hand, this is the wrong project: the files are models, and the licence forbids commercial use. Before printing, verify the keyway notation on your own lock and confirm your slicer can reproduce the blade dimensions, since the README's problem-reporting steps depend on caliper measurements of the printed part.

Frequently asked questions

Official sources

1. Issues
2. README
3. Xyl2k/TSA-Travel-Sentry-master-keys on GitHub