[gonehome]

I think it could be a generic problem that's abstracted away, but you have to absorb identity into the stack at the OS level.

For a centralized authoritarian example of this you can consider WeChat. Unified API and auth layer that supports lots of different applications from one auth service that's used for basically everything.

In the decentralized world there have been attempts to do this as hacks on the existing web (stuff like open id), but they can't really succeed on the current stack. The Urbit OS is an attempt to solve these types of issues by boiling the ocean and in doing so this is one of the issues that gets fixed.

[Anunayj]

I agree, honestly something like public key auth built into the browser seems great to me! I use a single ssh key to login into multiple servers, I don't have to rely on a central authority to identify me and anyone can remove my access by just removing my public key.