this post was submitted on 14 Jun 2023
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This is about a user browsing on another Lemmy instance. For example, a user from lemmy.world receives a link on a chat app to a post on beehaw.org. Now he wants to reply to that post, to do so the user has to go to the same post on their home instance. Beehaw.org has no idea that the user has an account on lemmy.world, so they can't just redirect the user. It is very difficult for Lemmy instances to share this data, as browsers have built in protections to prevent websites from sharing common identifiers (those were used to track people over multiple websites).
A menu could be added where the user can select their instance, but that would still require Beehaw.org to know about the existence of the user's home instance. This could still give issues with smaller instances, that are not well federated with other instances.
Oh, I see. I was thinking of opening links within Lemmy.