Re: Good, good.
"Note that it is actually impossible to prove settled status, there is no physical proof like a residency card."
The House of Lords wanted to introduce a "settled status" card, to avoid the problems mentioned here. But the government rejected that amendment, apparently it would be fine to do all that digitally. It strikes me that some folk might not have 100% confidence in such a system.
Source: https://www.standard.co.uk/news/politics/house-of-lords-eu-citizens-physical-proof-a4339516.html (among others)