If anti-tailgating sensors fail, what is a likely consequence?

• A. Increased risk of unauthorized entry due to tailgating
• B. Faster gate operation
• C. Reduced battery life
• D. Improved safety

Answer: (A)

Anti-tailgating sensors are there to stop a second person from entering through a secured doorway after the first person has authenticated. They watch the doorway for a tailgating event and trigger an action to prevent or record it. If these sensors fail, the system can’t reliably detect or stop someone who follows closely behind an authorized user, so unauthorized entry becomes more likely. That’s why the consequence is increased risk of tailgating and unauthorized access.

The other outcomes don’t fit a sensor failure: a faster gate operation isn’t a consequence of a failed security sensor, and reduced battery life or improved safety don’t directly follow from the sensor failing in this context.