Hi, i understand you are looking for QR based web application i am sure i can build and Help for your required
Relevant Skills and Experience
Huge experience in php, wordpress, joomla, Drupal, Magento, xml, Html,xHTML, javascript, jQuer, My Sql,WebServices, HTML5,CSS, Ajax,jquery, GraphicDesign, WebsiteDesign, Photoshop and Logo Design.
Proposed Milestones
$250 SGD - QR based web messaging client
Let's discuss more and work quick together.