humptydumpty
To diverge slightly, I recently wanted to return an item to Amazon. In the past they have provided a return label for printing which is easy for me as I can do that from home - but instead I got a QR symbol to scan in - my phone doesn't do that! no idea what to do instead (Amazon is very difficult to contact!) in the end I gave up. Maybe that's their intention??!
If you take the parcel to your local post office/sorting office they will scan the QR code and print the label for you.