Calendar, vCard, MECARD, Email, Geo, Phone and Wifi network..
Just put shortcode into you content page, and you have one QR code customized in what color you want, with inside of it.
The content of QR code will be the permalink of the current page.
If you want to change the content of QR code just use the parameter 'm like that..
You can also use the widget of the plugin.
The settings from Vasaio QR Code settings page will be the default settings for new widget, and the settings from widget will be individual for every widget you use..
The uniqueness of this plugin stand in three things standalone QR codes, colored QR codes and customized QR codes with logo inside..
The plugin is not using any other application to generate QR code..
The principle is simple the only think that is metter is the contrast between colors.
You can choose another color for the code and the plugin will get the color of the main color you choose => the contrast resulted is the same between balck and white ..
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