Plan

Email+magic-link.
- Solves multi-device.
  - Unification of identities under the same site with UserID.
- Tell self-hosters that users won’t be able to comment from their web until they assign an email provider or passkeys.
- Reuse the magic link flow that we have in hosting and make the email service aware of the attestations.
- Bring the same workflow to the app.
App key as identity server.
- Legacy update
- App Node is an identity server, the same way a Server Node acts as an identity server.
Email+Passkeys.
Desktop linked identities.
- UserIDs=ContactIDs
Cross-site signing in.
- The DREAM. The Endgame but it will take some time to arrive here.
Deal with olds agent keys.
- We are ok with having to identify in the future, old comments created from mobile.
Username+Passkeys.
- For Sites that won't want to ask for email, specially for self-hosted Sites.

Notes

The profile signed with any session key with the latest timestamp is your profile.