Two-factor authentication

An extra sign-in check can require leaving one screen, finding a code or prompt elsewhere, and returning to finish. We practiced that sequence instead of assuming the second step was self-explanatory.

Two-factor authentication combines distinct types of evidence, such as a password and an authenticator on a device. Different methods provide different protection. For teaching, the immediate task is to identify the account's actual method, practice it privately, and understand recovery before access is lost.