Governments and banks love this, but I've even seen it with phone companies with e-sims. I quickly needed a new phone subscription, so I considered an e-sim, because I figured you could activate it by scanning the QR code from the screen. But no, they will mail me a piece of plastic with the QR code on it. So I went with a regular sim instead.

We had this too but instead of waiting for a letter you just had to go to any post office. It's more practical because there's no waiting