Right, you can back up the key. There’s three general approaches to SSH: having per-device client keys, having per-server keys and having the same key everywhe

Right, you can back up the key. There’s three general approaches to SSH: having per-device client keys, having per-server keys and having the same key everywhere. A Secure Enclave, Yubikey or other hardware keys work well with the first approach. Ideally, you won’t loose all keys at once.