What is NFC: Definition, Functions and How it Works


Near Field Communication or NFC is a technology that allows adjacent devices to communicate with each other without contact.technology NFC is embedded in smartphones, payment cards, and smart bands.

technology NFC may have been talked about a lot lately, but it’s nothing new. Since last year, several smartphone in the world have embedded this NFC in several smartphones mid-range smartphones flagships.

NFC in smartphones may not have developed as much as it was a few years ago, but now NFC is growing because of other technological developments. For example, an electronic toll card is mandatory for drivers who want to enter toll booths to make smartphones NFC is selling well.

Smartphone NFC allows e-toll card holders to top-up and update their toll e-

What is NFC ?

As mentioned above, Near Field Communication technology or NFC is a technology that allows two NFC to communicate with each other if they are in close proximity.

One device will act as a transmitter, and the other will act as a receiver. Both devices must be compatible with each other using NFC, for example an electronic/crypto card and another device acting as a transmitter.

How NFC on the phone?

The advantage NFC is the connection speed. In less than 10 seconds, two devices can be connected using NFC, which is faster than bluetooth. Currently, NFC is still limited to flagship mid-range smartphones and . smartphones

Although NFC is widely available on smartphones, you can enjoy its functions as follows:

1.Contactless Payments

Smartphone NFC can make payments simply by providing a closer distance to the post office.phone maker Android Samsung has a payment line Samsung Pay. The Samsung Pay was originally made for phones with NFC. Without NFC, Samsung Pay wouldn’t be of much use.

As useful as Samsung Pay and NFCare, it’s great that users can make contactless payments. Enter your credit or debit card data into Samsung Pay, when you want to pay the cashier, just open Samsung Pay and stick or hold your phone to the reader.

2. Reading electronic/crypto

If you frequently use phone numbers or electronic wallets, a cell phone with NFC will be very useful. The reason is, you don’t need to go to an ATM or go to Indomaret and Alfamart to check your balance.

3. Transferring data to a PC

Some PCs today are even equipped with NFC. Well, if your phone also has NFC, then you can use it to transfer data from your phone to PC without cables, without Bluetooth, just NFC.

4. Wifi

Today there is Wi-Fi porter tool that allows you to directly access Wifi without entering a password. You can just plug your existing NFCporter Wi-Fi and voila! You are directly connected to wifi. There are many NFC .

Works The NFC

works NFC is that by bringing two devices closer together, you also have to remind them of Bluetooth and wifi, both of which rely on radio waves to transmit information.

More uniquely, the type of technology used is the old radio frequency identification type using electromagnetic induction to transmit information.

NFC on an active device, for example NFC on a smartphone, can induce an electric current in a passive device for data transmission purposes.

Therefore, NFC in passive devices does not require power for data transmission purposes. Thus, we can see that the electronic/e-money does not have a battery but can still communicate with NFC enabled devices such as smartphones.

Thanks to NFC, electronic/crypto cards are now commonly used to pay for buses, enter toll gates, pay for groceries and many other cards. Just one tap, then the transaction can be done.

Electronic PBX/cryptocurrency payment solution contactless that is highly recommended during this pandemic, because it can minimize the spread of the virus by touching or coming into contact with goods.

In order for two devices with NFC to communicate with each other, the two devices must be close enough, no more than 10 cm. Another thing with Bluetooth which can still reach a distance of 10 meters for data communication.

Is NFC secure?

The use of NFC is increasingly common, but is the presence of NFC guaranteed to be secure? you should understand, because this feature has passed many different security tests, so it is very safe to use.

In fact, the NFC is also specially certified when downloading data via TSM to protect all consumer data.


Now that’s the explanation of what NFC and its functions and how it works. You also need to know that is apart from mobile phones, NFC technology also found in other devices such as mirrorless or the like.

Here, NFC is useful for connecting a cellphone and a camera so that users can access the camera from a cellphone such as viewing photos or videos in the camera memory, changing settings, to making the cellphone screen as viewfinder a camera

NFC has also been widely applied in Bluetooth so that the process of connecting the cellphone and speaker is much more practical and saves time.