Which application is not associated with RFID systems?

In this context, when assessing the applications associated with RFID (Radio Frequency Identification) systems, it's essential to understand the primary purposes of RFID technology. RFID systems are commonly used for identification, tracking, and managing inventory or assets without needing direct line-of-sight.

Keyless entry systems leverage RFID technology by allowing users to unlock doors or access points without using traditional keys, thereby providing convenience and security. Similarly, anti-theft detection systems utilize RFID tags to monitor merchandise in retail settings, triggering alarms if items are removed without proper deactivation of the RFID tag. Airport baggage handling also employs RFID technology for efficient tracking and management of luggage, ensuring that bags are correctly routed and delivered to the right passengers.

The choice indicating "None of the above" is accurate because all the applications mentioned—keyless entry, anti-theft detection, and airport baggage handling—are indeed related to RFID systems. Each application exemplifies how RFID technology can improve processes through automation, tracking, and enhanced security. Thus, this option correctly reflects that all presented applications are relevant to RFID functionalities.