SWipe

SWipe is an application for reading magnetic stripe cards over an audio port.

Requirements:

• A hardware audio dongle to read the cards, such as those provided by Square for their payment service.
• Qt 4.6 or later (including Qt Multimedia plugin)

It has been confirmed to run on Linux, Windows and OS X.

To build on the terminal, simply run: qmake && make

You may also open the project file in Qt Creator to build.

http://blog.tehinterweb.com/