Board Thread:Game Discussions/@comment-207.140.47.211-20131230152255/@comment-173.217.36.246-20140715133325

You do have to supply a phone # or Facebook login to create a line Id but that information isn't public through line. But a lot of top guilds require it... You're not going to get a 40 person guild to all change their apps because you think something is better. Their house, their rules. Don't like it, don't join that guild. My guild started requiring it when we saw that having line doubled or tripled war scores because of greater involvement.