Any arguments against separating identity from instance/platform? (single identity across the fediverse) (lemy.lol)

submitted 2 months ago by matcha_addict@lemy.lol to c/fediverse@lemmy.world

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I am sure it was discussed here before, but I can't find a good way to search this community.

Are there any arguments against having a user's identity federate, and be compatible across platforms?

For example, let us say I sign up with my instance, matcha_addict@lemy.lol

But what if I go on mastodon, and I want to have my own micro blog. Or maybe go to write freely and post some blog posts. I'd have to make a different account on each one.

What if mastodon or write freely could just let me log in with my lemmy account (or lets call it federated account). This has several benefits:

users don't have to scratch their head on if I am the same person or not across these platforms
theoretically, someone following my feed can get updates on what I do on multiple platforms

Now I understand this would be difficult to implement and iron out all the edge cases, but am I missing anything on why it wouldn't be a desirable feature, given it is implemented?

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[-] hendrik@palaver.p3x.de 2 points 2 months ago* (last edited 2 months ago)

I don't see any technical limitations preventing that. And I think it's a desirable feature. Imagine a world where you don't have to come up with lots of passwords and sign up on dozens of websites, but instead have one identity that's saved in your device and you can access any free software service without signing up and it'll already tell you if your friends are there. It could interconnect content and features...

It's a bit difficult to get it right, though. The identities need to be secure and reliable. Servers can't vanish (or data needs to be distributed) or people will lose everything at once. We need pseudonymous handles, sock puppets and access control. And there is a lot of trust involved. We need to mitigate for spam and trolls...

And agree on one standard that gets everything right for any arbitrary use-case.