Technology

Choose the Correct Answer

Correct Answer : Option b

Explanation
Near Field Communication (NFC) is a short-range wireless technology that enables secure communication between two NFC-enabled devices when they are in close proximity (typically within a few centimeters).

Biometric authentication: NFC is often used in biometric authentication systems, such as unlocking smartphones with fingerprint or facial recognition linked to an NFC chip. Some security access systems also use NFC in combination with biometric verification.

Wireless data transfer: NFC allows short-range data transfer between devices, including payments (e.g., Google Pay, Apple Pay), digital business cards, and file sharing.
Smart ticketing in public transport: Many modern public transport systems use NFC-based smart cards or mobile payment systems for contactless ticketing.

Examples: London’s Oyster Card, India's Metro Smart Cards, Japan’s Suica Card.
Contactless hotel room access: Many hotels have replaced traditional keycards with NFC-based mobile keys, allowing guests to unlock their rooms using NFC-enabled smartphones or smart keycards.
However, It cannot be used in Real-time traffic monitoring.
Real-time traffic monitoring: Real-time traffic monitoring typically relies on GPS, IoT sensors, and RFID, rather than NFC, which has a very short range (a few centimeters). NFC is not used for monitoring moving vehicles over long distances.