You may have come across QR codes with logo, popularly known as design QR codes. However, the site www.oysso.com implies that the QR codes with design would be mode modified. They would provide you with a relatively more artsy appearance than simply an image logo being placed in the middle of a QR code.
Oysso would offer several functions to let your creativity run wild. You would be able to create professional and unique QR codes. It would not be wrong to suggest that the enhanced attractiveness of the QR codes with design would be inviting your users to scan the code relatively more as compared to the simple logo.