The BAAP Mobile Version is a complete toolkit to help mobilize your WordPress site. It has a mobile switcher, themes, widgets, and mobile admin panel.
Easily insert QR codes in your blog, with Widget or Shortcode.
This plugin generates a image with a QR code with the current post URL.
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.
Create QR codes for your WordPress posts and pages
Qurify and display whatever QR Code you want and (optional) let your visitors qurify their own QR Codes, directly on your blog!
Use QR Codes (Google API or QR Code Lib) anywhere in your blog, as a Widget, Shortcode, Tooltip or with a PHP function.
QR Code for your blog
QR Code for your blog (based on Google Charts API)