I believe what the article was referring to with regards to synchronization is that it works fine with existing file sync software like Dropbox or Google Drive, and knows how to merge changes. I believe there are plugins for things like SFTP as well. It does not provide a hosted synchronisation server or anything like that, so that would still be a selling point for LastPass or 1Password's subscription services if you want that feature.
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I believe what the article was referring to with regards to synchronization is that it works fine with existing file sync software like Dropbox or Google Drive, and knows how to merge changes. I believe there are plugins for things like SFTP as well. It does not provide a hosted synchronisation server or anything like that, so that would still be a selling point for LastPass or 1Password's subscription services if you want that feature.