Quikkly Tags are a form of QR Code Art which, instead of prioritizing the dots, prioritizes the image. This gives brands and people more control over the art and visual call-to-action of the code/tag.
Quikkly Tags also include text above and below the scannable tag to clarify what will happen upon scanning the tag. This takes the guessing out of the process. Combined, these features make the Quikkly Tag the most human-understandable of all forms of QR.
The down-side is that they are not part of the QR standard and you need the Quikkly app or a Quikkly-compatible app (i.e. one which has the Quikkly SDK in it) to scan these tags.
Find out more at http://www.quikklytags.com.