It is a good idea I had the same thought, but those books ain’t cheap. This sticker has a lot of beginner knowledge in the QR code that can easily be read by many and not just 1 person per book.
It is a good idea I had the same thought, but those books ain’t cheap. This sticker has a lot of beginner knowledge in the QR code that can easily be read by many and not just 1 person per book.