Penetration testing blog

A few days ago I found the following presentation by FX of Phenoelit @ the Chaos Communication Congress related to Barcode technolgy in 1D and 2D format. The one dimensional format is the typical format you’re most familiar with, mostly used to tag books and originally created to tag Cars. And then the 2D format is the latest one, also called matrix code (rings a bell?) and for both the 1-D and 2-D there are several interesting variations. For instance, “Data Matrix” is a type of 2-D code where using white and black squares you can get data in forms of ASCII art.

Anyhow, once you read the following PDF it gets you thinking. How old and usually vulnerable this technology is and then again how much we use it. And *for experimental, research and educational purposes only* what kind of projects you could start working on.

Along with the PDF I include a couple of links. Getting a barcode reader is very cheap and your local laser printer can most likely print any barcodes you want.

So once in a while it’s nice to leave the web aside and focus your mind on other technology.

The PDF I just mentioned can be found at the following page:

http://events.ccc.de/congress/2007/Fahrplan/events/2273.en.html

Take a look at the following definitions:

http://en.wikipedia.org/wiki/Barcode

http://en.wikipedia.org/wiki/Data_Matrix

http://en.wikipedia.org/wiki/Aztec_Code

You have at wikipedia a whole list of links to the different variations of 1-D and 2-D barcode symbols.