Dennis is responsible for security at a power plant. The facility is very sensitive and security is extremely important. He needs to incorporate two-factor authentication with physical security. Which of the following would be the best way to accomplish this?

The correct answer is to incorporate two-factor authentication with a mantrap. By having a smartcard at one door (type II authentication) and a PIN number (type I authentication) at the other door, Joanne will combine strong two-factor authentication with physical security. Smartcards by themselves, or paired with a fence, are still single-factor authentication. Video surveillance, though often a good idea, won’t help with two-factor authentication.