@[deleted]As @[deleted] said, there are no two-factor authentication plugins at this time. This is something that has been requested a lot, so this make it as a plugin in the future. With this being said, the code is open source giving you the freedom to customize the code to your liking (as long as you don't claim the codebase).I'm sure this wouldn't be hard to implement as really you're preventing the full login until they type a code that was sent to them via email/phone.Cheers.