SSO and nomadic federated identities

PropaGandalf@lemmy.world to Fediverse@lemmy.world – 32 points –

That's a feature I'd love to see implemented in the future, if you could log in to any federated service with one fediverse account. I think some newcomers might have hoped for this feature when they heard that you can see content from any platform with one account.

Unfortunately, you are currently tied to the UI and capabilities of the service you registered with. The features of a service like Mastodon, Lemmy or Peertube could actually be independent of where the account is stored. I'm thinking of Solid pods and it's ActivityPub implementation AvtivityPods where an account is like a capsule that can store data of all kinds and from different services.

With a registered account on one instance, you could log in to any other service and consume the content in the intended environment. Or maybe we could decouple the services completely from the instances hosting the pods, so that you have servers that only store the data from all the services and those that provide the front end of the services. What do you think about this?

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I've been wondering how to accomplish this lately. I'm looking to host a few Fediverse instances for me and my friends to use. It'd be really nice for everything I run on those to have an SSO via the main domain or a login domain.

My idea was:

  • Lemmy.example.social
  • Mastodon.example.social
  • Pixelfed.example.social
  • Matrix.example.social

Login via

  • accounts.example.social

Is this possible, or in the realm of possible?

Have a look at Solid and ActivityPod. I think they are the closest to what you want to achieve.

I like the idea on paper. This feels like what the Fediverse needs. I'll have to tinker around with it.