Question

A data center entrance requires each employee to swipe an access badge and then enter a personal PIN on a keypad before the door unlocks. From an authentication perspective, what does this configuration provide?

Accepted Answer

Multi-factor authentication combining something you have with something you know

Answer

Single-factor authentication using two something-you-have credentials

Answer

Multi-factor authentication combining something you have with something you are

Answer

Two-step verification that still counts as a single knowledge factor