alt Hacker NewsIf you can use a QR code you probably should.
However, if you're walking down the street and need to quickly generate and apply a message, how will you pass along a QR code to an unknown future viewer ?
Can you draw a QR code with chalk or freehand with a pen, etc. ?
I will admit that the use-cases for "oh by codes" are weird and infrequent but I am convinced they will emerge ...
I don't disagree that URL shortening is incredibly useful at times. Merely that writing out the whole url is almost certainly a better approach and that any sufficiently short domain name is fit for purpose.