@Gargron In denmark, Datastyrelsen (the state office caring for data) released an "altID" app, which can be used as an ID, IRL or online. After creation, data stays on your device, and what clients get is an age or identity verification, and you get to choose what to share. They failed to make it open source, but given it does what the say it does, it at least better than scanning passports etc, I believe. It is derived from an EU model afaik. And I was able to install it on my google-free /e/os fairphone. FWIW.