Jerboa is a Lemmy app. Kbin is their own development project. They both use the ActivityPub protocol and that's the main similarity. It would be like implementing Mastodon logins in Jerboa, which isn't the main focus. They're developing a Kbin app right now.
No, the whole idea of the federated system is that you log in and use your home instance.
This spreads the load out since user interaction is the bulk of the system load.
If user identity was federated (like an OpenID type situation) then users would just log into whatever the current fastest instance was.
That being said it would be nice to “link” accounts between various instances (and/or other federated services like kbin and Mastodon), if only to give users a way to validate that multiple accounts belonged to the same person/org (if they wanted). Right now you can just post it in your “About” section of your profile but that doesn’t really stop someone from lying about it, etc.
I think the question is about login to the kbin instance through the jerboa app, we're in the jerboa community after all. In this case it's theoretically possible to implement.
Jerboa is a native-android client for Lemmy, built using the native android framework, Jetpack Compose.
Warning: You can submit issues, but between Lemmy and lemmy-ui, I probably won't have too much time to work on them. Learn jetpack compose like I did if you want to help make this app better.
Jerboa is made by Lemmy's developers, and is free, open-source software, meaning no advertising, monetizing, or venture capital, ever. Your donations directly support full-time development of the project.
1Hefs7miXS5ff5Ck5xvmjKjXf5242KzRtK0x400c96c96acbC6E7B3B43B1dc1BB446540a88A0141taVyY6e1xApqKyMVDRVxJ76sPkfZhALLTjRvVKpaAh2pBd4wv9RgYj1tSPrx8wc6iE1uWUfjtQdTmTy2FGMeChGVKPQuVaddr1q858t89l2ym6xmrugjs0af9cslfwvnvsh2xxp6x4dcez7pf5tushkp4wl7zxfhm2djp6gq60dk4cmc7seaza5p3slx0sakjutm