NFC機能の使い方は？

NFC, or Near Field Communication, is a short-range wireless communication technology, which is widely used in many fields such as mobile phones, smart watches, payment cards, and license plates. Below I will explain the basic principles of NFC and how to use it.

1. Basic principles of NFC

The basic principle of NFC is similar to RFID(radio frequency identification) technology, which uses radio waves to communicate. However, the NFC communication distance is closer than RFID, generally about 4 centimeters, and the communication rate is higher.

NFC operates in three modes: read mode, write mode, and point-to-point mode. Read mode is the most common mode, such as the phone sensing the NFC label on the table. In write mode, information is written to an NFC tag on a PC, smartphone, or portable electronic device, and peer-to-peer mode, two NFC devices communicate with each other.

2. Use of NFC

NFC is the most used in smart phones, and the main applications include: payment, file transfer, label reading, and sharing content. Examples of specific applications:

(1) NFC payment: NFC payment refers to the mobile payment method completed by NFC technology, which is generally used for small payments, such as mobile phone NFC payment, bus card swipe, shopping mall swipe card, etc.

(2) NFC file transfer: There are two modes of NFC file transfer, namely Android Beam and S Beam. Android Beam is used to transfer files between Android phones, and S Beam is used to transfer files between Samsung phones. The specific operation steps are: Turn on the NFC chip of the two mobile phones, touch the back of the two mobile phones together, wait for the successful induction of the NFC chip, and confirm the transfer file.

(3) NFC label reading: NFC labels can store a small amount of data, the data is stored inside the label, and the information in the label can be read using NFC card readers or sensors. For example, the intelligent service machine in the municipal service project implemented in Beijing is set up with the NFC label reading function, and residents can directly read the information in the mobile phone, such as ID card, driver’s license, work card and other information to the machine for business.

(4) NFC sharing content: Many types of content can be shared through NFC, such as phone books, music, photos, videos, web addresses, etc. For example, through NFC, information can be sent to the TV for playback, and the mobile phone screen can be quickly projected to the TV screen.

In addition, NFC has the following advantages：

1. 使いやすさ: NFC interactions require no more than a simple tap or wave. The intuitiveness of this technology reduces user effort and enhances the user experience.
2. 汎用性: NFC can be used across various sectors, from mobile payment systems and public transportation to access control and data sharing, demonstrating its adaptability to numerous applications.
3. 安全: The communication range of NFC is limited to about 4 centimeters, which reduces the risk of interception and makes NFC a secure channel for transferring sensitive information.
4. スピード: NFC connections are established almost instantly, which allows for rapid transactions. This efficiency is particularly beneficial in fast-paced environments such as retail checkouts or transit gates.
5. Low Power Consumption: NFC does not require a power source for the tags, which means passive devices (like stickers or cards) don’t need batteries. The readers are typically part of an active device, like a smartphone, which manages power efficiently.
6. Interoperability: NFC standards ensure compatibility across devices and systems, making it a reliable choice for global implementation.
7. Integration with Existing Technologies: NFC can complement existing technologies such as Bluetooth and Wi-Fi, often being used to simplify the pairing process.

8. Customer Engagement: In marketing, NFC tags can offer consumers quick access to additional information, promotions, and interactive content, thus driving engagement.

   Come and feel it！