Sara wants to store her bus ticket and student ID on her phone for quick access by tapping it on a reader. Question: Why is NFC a better choice than RFID for her phone?

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BlackTom AI · Accepted Answer

The scenario asks why NFC is a better choice than RFID for storing a bus ticket and student ID on a phone for tap-and-go access.
Option a: 'RFID chips are always more secure than NFC' — This is not generally true. Security depends on implementation, not a blanket rule that RFID is more secure. NFC often includes secure elements and higher-level protocols suitable for payment and access, but the statement as written overgeneralizes security comparisons.
Option b: 'NFC is designed for close-range and device-to-device communication' — This is accurate. NFC operates over very short ranges (a few centimeters) and is optimized for peer-to-peer interactions between devices, which matches the use case of tapping a phone to a reader.
Option c: 'NFC requires no power source to work' — Incorrect. NFC devices typically rely on the host device (phone) for power; the reader may draw minimal power, but the NFC tag and the phone’s NFC controller still require power, and some modes rely on the phone being powered.
Option d: 'RFID can only be used with laptops' — This is false. RFID is widely used across many devices and contexts (tags, cards, readers) beyond laptops, including access badges, inventory, and contactless payments, so the claim is inaccurate.
In summary, the valid reasoning centers on NFC’s intended use for close-range, device-to-device interactions, which aligns with storing a ticket and ID on a phone for tap-to-read scenarios.

Mobile and Wireless Technology (082025-NIO) Chapter 6 - Other Current Technologies

Sara wants to store her bus ticket and student ID on her phone for quick access by tapping it on a reader. Question: Why is NFC a better choice than RFID for her phone?

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