Everything You Need To Know About NFC Technology
- June 2, 2022
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What exactly is meant by the term “Near-Field Communication” (NFC)?
When two devices are brought within close range of one other, they may communicate using near-field communication (NFC) technology, which employs magnetic field induction. Credit card verification, giving physical access, and exchanging tiny files are just some of the ways this may be done.
It builds on and extends the efforts of current ecosystems and standards for radio frequency identification tags (RFID tags). Using current cell phones, NFC enhances RFID and contactless capabilities with new dynamic features. It is now possible to make use of the billions of RFID tags and terminals that have already been installed on current smartphones.
Multiple cards may be stored on the phone via NFC, making it simpler to make payments, go into a building or unlock a vehicle door. For example, automated Bluetooth headphone pairing and Wi-Fi connections may be accomplished via NFC. If a poster or ad contains data or an app, it may be instantly pulled up by the app.
It was designed to be used with Android Beam to transmit data between phones. Google Nearby Share, for example, uses NFC to deploy wireless services across faster networks like Bluetooth or Wi-Fi direct.
Because NFC can only communicate over short distances, it has significant implications for the security of gaining physical access. To make a purchase or unlock a door, the user must be within 3.5 inches (10 cm) of an NFC terminal. The fundamental principles of listening to and reacting to NFC requests do not need any power, which is a significant consideration. Credit cards, for example, don’t have batteries, thus this is a viable solution.
How does NFC Technology Operate?
Wireless tag scanners, encrypted credit card processing, and peer-to-peer (P2P) communication are three key advances that NFC builds on to allow a wide range of applications.
As a result of the RFID standards and specifications, NFC is built on top of them. In contrast to most other wireless radios, they use a separate set of physical principles for their wireless transmission. NFC uses magnetic field induction instead of radio wave transmission to send data. NFC data is sent at a wavelength of 22 meters, which is 13.56 MHz.
Data transmission using inductive coupling rather than radio waves has a significant disadvantage: the field fades out significantly more rapidly than radio waves. This prevents others from listening in on important talks concerning credit card purchases, door access codes, or other sensitive information. This is helpful.
To make contactless payments more secure, cryptographic credit card processing was introduced. Public-key cryptography enables the card to create a fresh authentication code for each transaction without disclosing the raw card information or the three-digit number on the back. Thus, the original card information cannot be obtained even if someone listens in on the conversation or someone hacks into a card while it is in transit.
The NFC Forum, a non-profit industry organization, built on the ISO/IEC 18092 standard by adding a P2P connection. An active reader queries a passive tag or card, which is a one-way interaction in RFID and credit card use cases.
NFC Technology: Applications.
The following are some examples of NFC applications:
- The use of mobile payment systems like Apple Pay or Google Pay;
- The use of a transportation card;
- Ticket exchange at a theater or concert
- Access control for offices or doors;
- Vehicle doors or rental scooters being unlocked
- A gadget that connects two devices by just a scan;
- use of a smartphone to control the temperature and scheduling of a radiator
- remote control of industrial equipment using a mobile device or tablet.
Some of the benefits of NFC technology.
The following are a some of the many advantages of NFC in the real world:
- Payment processors’ operating efficiency is improved
- Offers a higher level of security than regular credit cards for payments;
- NFC messages are difficult to intercept from afar;
- Convenience for customers while purchasing items
- Access to back-end data is made easier, as well.
- Relative to other wireless systems, this one makes it easier to set up new connections.