This plug in allow you to display your contact information (or other) in QR Code form.Just drag the widget into suitable location and you're done.
You can download and install easyqr by using the built in WordPress plugin installer. If you download easyqr manually, make sure it is uploaded to "/wp-content/plugins/easyqr/".
Activate the plug in from "Plugins" admin panel using the "Activate" link.
After successfully activate the plug in, go to link "widgets" under "appearance" menu. Drag easyqr widget into suitable location and configure it with your data. To get more contact information format, feel free to visit http://qrgenerator.mindster.net