What is "rublon"

Rublon is a two-factor authentication system that acts as an additional security layer which protects the password-based login process to web applications. A protected account can only be accessed by someone who enters the correct password and scans a QR code using the Rublon mobile app, which holds the digital identity of the account's owner. In web browsers that have been previously defined as trusted, only the password is needed in order to sign in to a protected account of any supported web application.