I know there has been some discussion in the past about Yubikey's. I wanted to ask if the folks at Agilebits felt that the new U2F (2 Factor) standard could be a possibility for 1Password. As I understand it, the reason that Agilebits has shied away from Yubikey's in the past is it needs an internet connection to validate against a third party server. If I understand U2F correctly, its possible that 1Password could locally implement the standard. Does U2F open up a new possibility for 2 Factor authentication for 1Password?