I recently found this blog which shows a business card with a QR card. I thought I'd create a business card with LaTeX with a similar QR code. I took a LaTeX template from here, found out about the pst-barcode pacakge, learnt the MECARD format, and combined them to make this:
ZBar is an open source software suite for reading bar codes from various sources, such as video streams, image files and raw intensity sensors. It supports many popular symbologies (types of bar codes) including EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39 and Interleaved 2 of 5.
ZXing (pronounced "zebra crossing") is an open-source, multi-format 1D/2D barcode image processing library implemented in Java. Our focus is on using the built-in camera on mobile phones to photograph and decode barcodes on the device, without communicating with a server. We currently have production-quality support for:
This is a small application that can be fed the output video stream of a webcam, in which it can recognise and decode code-39 barcodes. It is simply a console application that is limited to parsing an input raw ppm stream, outputting the barcodes to the stdout.
Barcodepedia is a community based online barcode database. The database is completely free to use, and everyone is welcome to contribute. Although it is possible to create a user on Barcodepedia, you can use the entire homepage without one.