keychat on Nostr: If Alice has two phones and Bob has one phone, and Alice's two phones have different ...
If Alice has two phones and Bob has one phone, and Alice's two phones have different Keychat IDs, when Alice chats with Bob, if she feels it necessary, she can create a pairwise group with her two Keychat IDs and Bob. This can achieve multi-device synchronization to a certain extent.