What are the main application scenarios of NFC? What are the specific functions of NFC?

NFC is an emerging technology. Devices using NFC technology can exchange data when they are close to each other. It is a short-range wireless communication technology. Now domestic mobile phones basically have built-in NFC bus card function. You only need to activate it, and you can use your mobile phone to swipe the card when taking the bus and subway. You can also buy gas, travel, etc. It is also very convenient!

Contents of this article

1. What are the main application scenarios of NFC?

2. What is the specific role of NFC

3. Will it consume power if the NFC function is always turned on?

What are the main application scenarios of NFC?

Three scenarios: point-to-point, card emulation, and card reader.

NFC: NFC near field communication technology is the integration and evolution of contactless radio frequency identification and interconnection technology. It combines the functions of inductive card reader, inductive card and point-to-point on a single chip, and can identify and exchange data with compatible devices within a short distance. The working frequency is 13.56 MHz, but users who use this mobile payment solution must replace special mobile phones. At present, this technology is widely used in Japan and South Korea. Their mobile phones can be used for airport boarding verification, building access keys, transportation cards, credit cards, payment cards, etc.

What is the specific role of NFC

NFC on mobile phones can be used for payment, connecting devices, swiping buses and subways, sending messages, etc.

1. Payment function (swiping meal cards, bank cards, etc.): Simple operation method, turn on the NFC of the mobile phone, and also touch the bank card, you can read the bank card information, check the transaction record, open quick payment, etc., you can operate directly, convenient and fast consumption and inquiry. Use reminder, be sure to keep your mobile phone safe and make a complex password protection.

2. NFC connected devices (NFC speakers, NFC headphones, etc.): When the Bluetooth device has built-in NFC, the operation will be very simple. You only need to turn on the NFC of the mobile phone and touch the NFC of the Bluetooth speaker together to quickly connect to use Bluetooth.

3. NFC for buses and subways: As long as your phone has NFC function, you only need to bind your phone to a bank card, and you can use it to pay for buses and subways, which will make your journey much more convenient.

4. NFC transfers corresponding information (photos, files, phone books, videos, etc.): As long as both mobile phones have NFC function, files can be transferred between the two mobile phones, including photos, files, phone books, APK, videos, etc.

Does keeping the NFC function turned on consume power?

The NFC function will consume power if it is always turned on. The NFC function consumes power during operation. The functions are divided into passive triggering and active triggering.

Passive triggering is to turn on the NFC function, which is a state of waiting to be awakened. It will be awakened when encountering a card reader. The interaction process after awakening consumes power, and power is also consumed while waiting to be awakened, but the power consumption is small.

Active triggering means that the NFC function of the mobile phone becomes a card reader. After the APP on the mobile phone is opened, the NFC module is called to implement radio frequency reading, such as reading information on another card. This state will consume power.