Configuration sharing via QR code

Hi Opal team!
I have the app installed on two of my iPhones and iPad.
It’s rather unpleasant to configure all three devices by hand.
I saw the replies in other feature requests about constraints from Apple on export of settings to a server/local storage/icloud. Maybe it’s allowed to generate a QR code on screen? Similar to Google authenticator setup when you generate it on one device and scan with another.
3 kb of data in a single QR code is not much but should be sufficient for schedule and blocked apps lists.

Sharing via NFC would be a good option too, but I suspect not many users have more than one phone.