The compactness refers to the length of the url. Most mobile oriented stuff prefers portrait orientation.
Not to mention colors, fonts etc. QR avoids all these issues. Maybe something better will come along but will have similarities.
Not to mention colors, fonts etc. QR avoids all these issues. Maybe something better will come along but will have similarities.
I'm not sure about this compactness idea, especially since the text url is usually right there with the QR code, in the same space.