A company recently installed contactless smart-card badge readers on every door leading into its data center. Which of the following BEST explains the primary security benefit of this implementation?
It ties each entry attempt to a unique, hard-to-clone credential and unlocks the door only for authorized cardholders.
They detect large metallic objects carried by visitors before they enter the room.
They ensure that only personnel presenting an authorized, hard-to-clone smart card can unlock the door, linking each entry to an individual credential.
They physically prevent vehicles from ramming the entrance.
They provide continuous video recording of the doorway for later review.
Smart-card badge readers enforce authentication at the door. The door will open only when a valid, cryptographically protected smart card is presented, ensuring that each successful entry is linked to a specific employee credential that is difficult to duplicate. This helps prevent unauthorized physical access.
Incorrect answers:
Magnetometers detect metallic objects but do not authenticate users.
Video surveillance records activity but cannot itself prevent entry.
Bollards are used to stop vehicles, not to control pedestrian entry.
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Why are contactless smart-card badge readers considered secure?
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What is the difference between a contactless smart card and a magnetic stripe card?
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How does a smart-card badge reader differ from video surveillance in security applications?