What is NFC communication?

In the smartphone world, the NFC connection standard has emerged as a new phenomenon, attracting a lot of users’ attention. So what is the NFC or communication standard?

What is NFC?

NFC (short for Near-Field Communications) is a near-field communication technology that uses magnetic induction to make a connection between devices when there is direct contact or close proximity. NFC is developed based on the principle of identification by radio frequency signals with a maximum data transmission rate of 424 Kbps.

Due to the relatively short data transmission distance (within 4 cm), transactions via NFC technology are considered safe. NFC-equipped devices are usually mobile phones.

The phone can communicate with smart tags (also known as Tags), another phone, or NFC-enabled electronic or entertainment devices. In addition, NFC is also combined with many technologies used in public systems such as ticketing, electronic parking tickets, bill payment, etc.

An NFC tag is a very thin circuit that holds simple (rewritable) information. It does not need to use a power source.

Today, NFC technology is being oriented to become an effective mobile payment tool. An NFC-enabled smartphone or tablet can make transactions via credit card or act as a key or ID card. Most recently, Apple brought NFC to the iPhone 6 and 6 Plus duo to serve the Apple Pay feature.

At the present time, NFC is integrated into many devices running on many different operating system platforms, and has almost become a common standard for newly launched high-end phones. Includes Android, iOS and Windows Phone as well as BlackBerry 10.

Japan is a country that has adopted NFC very early. In July 2004, the first NFC-enabled mobile phone for mobile payments was launched in Japan, and by this time there have been around 100 million registered users of the NFC mobile payment service. The technology Japan uses is called “FeliCa”, a technology of its own, but it is also built on top of NFC. Even so, Japan is also trying to standardize its technology to better fit the world.

How does NFC work?

For NFC to work, we must have 2 devices, 1 is the reader (usually a phone) and the second is the target (target – usually another phone, nfc card, speakerphone…). The reader will actively generate radio wave fields (essentially electromagnetic radiation) sufficient to power the target device in passive mode. Therefore, as mentioned above: NFC tags do not need energy to operate, but when needed, it will be taken from the reader. This is an extremely significant feature because it allows people to make tags, stickers, keys or NFC tags more compact because no batteries are required.

Thanks to NFC, we only need to touch 2 devices together and they can connect, without having to declare many things like Bluetooth. Normally, we often touch 2 phones to send pictures, web links, information … or as shown below, touch the phone to the NFC headset to connect them quickly.

Practical application?

With its outstanding features, NFC is widely applied and the most advanced feature that people often talk about is electronic payment. In addition, with NFC-enabled phones and devices, it is also a quick and simple connection feature

​Using public transport: This can be considered part of mobile payments, but it should also be mentioned separately. Public transportation in big cities is in dire need of convenient payment methods like NFC.

Buy tickets: You can buy any kind of ticket with your NFC phone, from movie tickets, concert tickets, stadium tickets or even instead of checking in at the airport or simply a tram card. death.

Keys: Imagine throwing away all your keys at home and replacing them with a cell phone. With the use of NFC, all you need to do is lightly touch the door of your home, office or hotel, start the car…..

Check-in and review a certain place: Recently, Google has started to put NFC labels on some stores and restaurants in the US. With NFC phones, you just need to touch lightly to consult information, reviews, food or goods inside. Those of you who often use Foursquare to checkin also benefit, no need for network or GPS anymore, just touch the card to checkin.

Data exchange: Two NFC phones can be made to exchange data after a connection is established by bringing them within the NFC’s operating range. Users just need to touch their phone with someone else and the data will be transferred.

For Bluetooth or Wi-Fi pairing: Users only need to bring two NFC-enabled devices together, NFC will create an environment for them to connect without needing to declare through many steps.

​In general, although there are many effects, the use of NFC is divided into 3 groups: Touch and Go (for example, touch to open the door), Touch and Confirm (add an extra layer of security for mobile payments). such as entering a PIN to confirm payment) or Touch and Connect (sharing data with another device).

Which devices are being integrated NFC?

Currently, most recently launched smartphones have NFC built-in, all you need to do is pick it up and experience it.

+ Samsung phone products: Galaxy S5 , Galaxy Note 4 , Galaxy Alpha

+ Sony phone products: Xpreia Z3, Xperia Z3 Compact, Xpreia Z2

+ HTC phone products: HTC Desire Eye, HTC One E8, HTC One M8

+ Asus phone products: Zenfone 5, Zenfone 6

+ LG phone products: LG G3, LG G2

+ Oppo phones: Oppo Find 7a, Oppo R5, Oppo N1 Mini, Oppo R1

Android tablets: Sony Xperia Z3 Tablet Compact, Samsung Galaxy Tab S 10.5 (SM-T805), Samsung Galaxy Tab S 8.4 (SM-T705), Google HTC Nexus 9 Volantis, Lenovo Yoga Tablet 2 Pro, Asus MeMo Pad 8, Dell Venue 8″

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