![](/static/253f0d9b/assets/icons/icon-96x96.png)
![](https://lemmy.dbzer0.com/pictrs/image/a18b0c69-23c9-4b2a-b8e0-3aca0172390d.png)
I so wish someone would make a cleaned up version that uses something like Podman and better conventions. Honestly, it needs to be a wiki like document that is slowly updated, improved and even varied. Because when I look at these comments I lose faith in implementing the original post.
Depending on the site, you can use one device to login to another without installing additional software. For instance, if you have an iPhone with a passkey for microsoft.com stored on it, you can login to Microsoft.com using the iPhone.
Here is a webpage that has some screenshots to show you what I mean. You can probably google some other examples.
https://appleinsider.com/articles/24/05/02/microsoft-finally-lets-users-sign-into-accounts-with-passkeys
It is possible to sync passkeys across devices but at this point is mainly within a single ecosystem.