what is nfc in linux

nfc in linux refers to "Near Field Communication" technology. NFC is a short-distance high-frequency wireless communication technology that can realize functions such as data exchange, information transmission and payment between devices. In Linux systems, NFC is widely used in smartphones, tablets, electronic access control systems, smart cards, In equipment such as payment terminals.

The operating environment of this article: Linux 6.4.3 system, DELL G3 computer.

NFC in Linux refers to Near Field Communication (near field communication) technology. NFC is a short-distance high-frequency wireless communication technology that can realize functions such as data exchange, information transmission and payment between devices. In Linux systems, NFC is widely used in smartphones, tablets, electronic access control systems, smart cards, payment terminals and other devices.

NFC technology has short range, usually effective within a few centimeters, and it uses a frequency of 13.56 MHz for communication. NFC enables two-way communication between two devices, transmitting data via radio frequencies. NFC devices can act as card readers and tags at the same time, making data exchange between the two devices more convenient and faster.

Linux system provides a series of NFC functions, including NFC driver, NFC protocol stack, NFC API, etc. The NFC driver is responsible for communicating with the hardware device and converting the RF signal at the physical layer into data. The NFC protocol stack implements different levels of protocols, including ISO14443A, ISO14443B, ISO15693, MIFARE, etc. The NFC API allows applications to interact with NFC devices to implement data transmission and payment functions.

In Linux systems, NFC technology can be applied to many fields. Most commonly found in smartphones, NFC technology can be used for mobile payments, authentication and data transfer. Users can use the NFC function to make mobile payments, and place the phone close to the POS machine or other NFC-enabled devices to complete the payment. In addition, smartphones can also transfer data with other devices through NFC, such as transferring music, photos and other files from one mobile phone to another.

In addition to smartphones, NFC technology in Linux systems can also be applied to electronic access control systems. Users can use cards or mobile phones carrying NFC chips for access control. As long as the card or mobile phone is brought close to the access control card reader, the door lock will automatically unlock. This method not only facilitates users, but also improves the security of the access control system.

In addition, NFC technology in Linux systems can also be applied to smart cards, payment terminals and other devices. Smart cards and payment terminals generally use NFC technology to implement payment functions. Users only need to bring their mobile phone or card close to the terminal device to complete the payment. This method is more convenient and faster than the traditional card swiping method.

In short, NFC technology in Linux provides a convenient and fast way to exchange data and make payments between devices. It can be used in devices such as smartphones, tablets, electronic access control systems, smart cards and payment terminals. With the development and popularization of NFC technology, it will play an important role in more fields and bring a better user experience to users.

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