Just like apps and websites implement “Sign in with Apple” and Google couldn’t we build some kind of federated authentication provider? Then everyone creates an account there and fedi apps can implement an easy way to authenticate users. Even non fedi apps could use it. I imagine user interaction between different fediverse platforms would be much easier too.
I guess could run an auth instance. Ideally everyone would run their own, keeping your data safe.
Is there something likes this already? Saw some discussion here but not much else https://socialhub.activitypub.rocks/t/single-sign-on-for-fediverse/712
why can’t we use passkeys instead of passwords though? is it just a matter of convenience? if so, maybe there is a way to determine a passkey from a password?
We can, passkeys are being adopted all over the web. If you specifically mean for Lemmy or fediverse services, it’s probably just a matter of adding support. It isn’t hard, per se, but it is important to get it right.
You can store passkeys in a password manager like BitWarden and they become portable. Then it doesn’t matter if you have a centralized authentication server. You just get logged in with your passkey, supplied by your password manager.