Question

Select the statement(s) that are TRUE regarding 'Building Security Services'.

• A. 'Radio Frequency Identification Device' is used for electronic access control system.
• B. 'Magnetic Loop Detector' is used for fire detection system.
• C. 'Infrared Sensor' is used in public broadcasting system.
• D. 'Iris Scan' is a type of biometric access control system.

Hint:

- RFID = Smart cards / badges. - Magnetic Loop = Vehicle detection. - Infrared = Motion sensing / doors. - Iris Scan = Biometric access.

Answer 1

The Correct Option is A, D

Step 1: RFID (Radio Frequency Identification).
- RFID tags and readers are commonly used in electronic access control, e.g., smart cards, entry gates. - Hence, (A) is true.

Step 2: Magnetic Loop Detector.
- Magnetic loop detectors are used under road surfaces for detecting vehicles (e.g., in parking management, traffic signals). - They are not used for fire detection. - Hence, (B) is false.

Step 3: Infrared Sensor.
- Infrared sensors are used in motion detection, thermal imaging, and automatic doors. - They are not used in public broadcasting. - Hence, (C) is false.

Step 4: Iris Scan.
- Iris recognition is a biometric technique widely used in secure access control systems. - Hence, (D) is true.

Step 5: Conclusion.
Thus, only (A) and (D) are correct.

Final Answer: \[ \boxed{\text{(A) and (D)}} \]