Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
I don't have a wireless printer so I'm thinking about writing down the keys by hand on pieces of paper. Obviously I can't copy the QR codes that way. Are they necessary or do they just exist just for our convenience?
It's just for convenience.
Make sure to d̶o̶u̶b̶l̶e̶ triple check and use a pen that's readable in ten years, too.
Required, but never shown