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Sheogorath's Blog

Depending on the time of the day a friend, a colleague, a wise guy. The beauty of the world is its sense of humor to show humans their way by letting them search their own.

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JAB code

Today I learned about JAB code, a two-dimensional multi-colour bar code. JAB code works similar to a QR code but due to the use of different colours it achieves a higher data density. It aims to be used on analogue document to sign those digitally and provide a small JAB code for everyone to verify. It’s certified by the German Federal Office for Information Security (better known as BSI) and an implementation is available under LGPL.

I came across that during a conversation about storing small data backups in QR-codes. And while I see the use-case on some documents, I wouldn’t use it for archiving purposes. Due to the use of colours it’s drastically harder to recover after a long time and also subject to colour shifts of the paper. But for the purpose it’s certified for, it’s for sure a good fit.