How does Alliant’s two-factor authentication work? Alliant is pleased to offer two-factor authentication to better protect the security of its members' accounts. How do I sign up for Alliant’s Two-Factor Authentication? Do I have to sign up for Two-Factor Authentication or is it automatic? How will my Alliant login process change after I sign up for Two Factor Authentication? Does Alliant Two-Factor Authentication work with my PFM? What if I type my six-digit Two-Factor Authentication code wrong?