In a previous post I mentioned that I started maintaining a set of helper Ruby classes for working with barcodes. I have changed the structure of the project to make it a gem and I have published it on GemCutter.
In my day job, I work a lot with barcodes. We develop Windows Mobile software for devices with barcode readers. From time to time, I need to do file manipulation chores. That is: colleagues give me text files that contain barcodes and ask me to transform these.