What is the protocol for nfc on a cell phone?

what is cell phone nfc function where

What is the function of the nfc function on a cell phone

Cell phone nfc is near field communication technology.

NearFieldCommunication, or NFC, is an emerging technology that allows devices (such as cell phones) that use NFC technology to exchange data in close proximity to each other.

It is evolved from the integration of contactless radio frequency identification (RFID) and interconnectivity technology, through the integration of inductive readers, inductive cards and peer-to-peer communication on a single chip, using mobile terminals to realize applications such as mobile payment, e-ticketing, access control, mobile identification, anti-counterfeiting and so on.

Technical background

According to the relevant information, about the time in 2003, Sony (sony) and Philips (Philips) Semiconductor (now NXP Semiconductors) for cooperation, the plan is based on the non-contact radio-frequency card technology, research and development of a safer, faster and can be compatible with the wireless communication technology.

After several months of research and development, the two sides jointly released a compatible IS014443 contactless card protocol for wireless communication technology, named NFC (NearFieldCommunication), specific communication specifications called NFCIP-1 specifications.

Not long after the release of NFC technology, the two sides to the European Computer Manufacturers Association (ECMA) to submit a draft standard, apply for a near-field communication standard and soon be recognized as ECMA.340 standard, followed by the use of the ECMA to the ISO/IEC standards application and ultimately recognized as ISO/IECl8092 standard.

What does nfc mean on a cell phone

NFC in Chinese is called near field communication technology, NFC is based on contactless radio frequency identification (RFID) technology, combined with the development of wireless interconnection technology.

1. Provides a variety of very safe and fast communication methods for various electronic products that are becoming more and more popular in our daily life. On-site communication business combines near-field communication technology and mobile communication technology to realize electronic payment, identity authentication, transaction, data exchange, anti-counterfeiting, advertising and other functions, which is a new type of business in the field of mobile communication.

2. Near Field Communication (NFC) service enhances the functionality of cell phones and makes consumer behavior gradually go electronic, creating several new consumption and business models. NFC technology enables devices to realize the application of mobile payment, data exchange, e-ticketing, access control and other scenarios, such as NFC devices can be used as a bank card for payment, a public transport card for payment as well as an access control card.

3. NFC devices can be used as contactless smart cards, smart cards reader terminals and device-to-device data transmission links, a wide range of applications, NFC applications can be divided into four basic types: touch, complete. Applications such as access control or traffic/event ticket checking, where the user simply places the device storing the ticket or access code near the reader. Also useful for simple data retrieval applications, such as reading a web address from a smart label on a poster. Touch, Confirm. Applications such as mobile payments, in which the user must enter a password to confirm a transaction or simply accept it. Touch, connect, link two NFC-enabled devices for peer-to-peer network data transfer. For example, downloading music, exchanging images, or synchronizing address books. Connect and Explore.NFC devices can provide more than one function.Consumers can explore and learn about the device’s capabilities and discover the potential features and services of an NFC device.NFCNFCThe general application of NFC employs two-way identification and connectivity, and NFC-enabled cell phones are available in three modes of functionality: the NFC-enabled cell phone is used as a reading device (reader/writer), the NFC-enabled cell phone is used as a reading device (card emulation), and peer-to-peer communication applications between NFC-enabled cell phones.

Functions of nfc

NFC is also superior to infrared and Bluetooth transmission methods. As a consumer-oriented transaction mechanism, NFC is faster, more reliable and much simpler than infrared, and does not have to be as tightly aligned as infrared to transmit data. Compared with Bluetooth, NFC is oriented to close-range transactions, suitable for the exchange of financial information or sensitive personal information and other important data; Bluetooth can make up for the shortcomings of the NFC communication distance is insufficient, suitable for longer distance data communication. Therefore, NFC and Bluetooth complement each other, co-exist. In fact, the fast and lightweight NFC protocol can be used to guide the Bluetooth pairing process between two devices, promoting the use of Bluetooth.

The use of nfc

The emerging NFC cell phone now has a built-in NFC chip, which forms part of the RFID module, and can be used as an RFID passive tag — used to pay for expenses; it can also be used as an RFID reader/writer —NFC technology supports a variety of applications, including mobile payments and transactions, peer-to-peer communications and access to information on the move. Through NFC cell phone, people can be in any place, any time, through any device, and they want to get the entertainment services and transactions linked together, so as to complete the payment, access to poster information, etc. NFC devices can be used as a contactless smart card, smart card reader terminals, as well as device-to-device data transmission links, and its applications can be divided into the following four basic types: for payment and ticketing, for e-ticketing, for electronic tickets, and for data exchange and collection. ticketing, for e-ticketing, for smart media, and for exchanging and transmitting data.

What is the meaning of cell phone nfc function

NFC is the Near Field Communication technology, can be in mobile devices, consumer electronics, PC and smart control tools between the proximity of the wireless communication, and the NFC function does not need other accessories to assist can be used.

Vivo cell phone NFC open method: into the cell phone settings – other networks and connections – open the “NFC” switch; (support for NFC does not mean that support for vivo wallet in the relevant NFC function, please refer to the actual display shall prevail)

Note: If you can not see this menu, it means that the machine does not support the NFC function: If you can’t see this menu, it means the machine doesn’t support this function.

What is NFC on a cell phone


The appearance of the NFC logo on a cell phone is a reminder that there can be a nearby device that exchanges NFC data with the cell phone exists, such as a bank card, a metro card, a bus card, and so on. There are many situations in life where NFC is used, such as access cards, mobile wallets, bus and metro cards, recharging metro and bus cards, file transfers, and so on.

The NFC logo on the phone is a reminder that there are nearby devices that can exchange NFC data with the phone, such as bank cards, metro cards, bus cards, etc. NFC is actually an acronym for nearfieldcommunication, which translates to nearfield communication. Some friends may see here, or confused, what the hell is this nearfield communication? In fact, the simple point is: NFC is a short-range high-frequency communication technology, can be realized under a specific protocol for data interaction between devices in close proximity. For example, the Bluetooth function can be realized between two devices in the absence of obstacles, usually within 10 meters to achieve data transmission.

What can you do with NFC?

One, access card

Now a lot of people use cell phones or other wearable devices can realize the brush access card in and out. In fact, the reason why they use these devices can realize the access card function is because they have built-in NFC module. These devices can simulate the information of the access card through the NFC module, and then store it, and when swiping the card, the NFC will communicate with the access control by using the stored data. So the access control can be successfully opened, thus realizing the function of the access card. Very convenient, no longer afraid of forgetting the access card.

Second, the cell phone wallet

Now we all go out are rarely carry cash or bank cards, and as one of the cell phone payment method cell phone wallet, also need to use to NFC function. Like the current contactless transaction: cell phone wallet App through the use of NFC function to support NFC and some of the POS or other transaction equipment, through the NFC protocol to achieve data interaction, so you can realize the contactless transaction.

Three, the bus card and metro card

Nowadays, cell phones basically support the use of NFC function to simulate the bus card and metro card. We go out whether it is to take the bus or the subway, no longer need to go to the ticket, just take out the phone, open the NFC function, close to the scanning machine brush on OK. No longer need to coin or queue to buy tickets, greatly facilitating the travel of everyone.

Four, for the metro card and bus card recharge

Before everyone’s bus card or metro card is out of money, you need to go to a special place to recharge the card. Every time you need to wait in line, it’s a waste of time. Now with the NFC function, you only need to operate on the phone to realize the recharge, very convenient.

Five, file transfer

Two NFC-enabled cell phones, you can pass files through the contact mode, no need for cumbersome operation, only need to back contact, you can choose to share a cell phone’s pictures, files or other information to another phone. And the transmission speed is also much faster Bluetooth, you can say that this way of transferring files is very convenient and fast.

What is the function of cell phone nfc

NFC in cell phone is near field communication technology, which is used to read and write data, realize convenient and safe payment, and also can carry out instant transmission, share their pictures, apps and so on to friends.

NFC is an emerging technology that allows devices (such as cell phones) that use NFC technology to exchange data in close proximity to each other, evolving from the integration of contactless radio-frequency identification (RFID) and interconnectivity technologies.

Near-field communication service combines near-field communication technology and mobile communication technology, realizes electronic payment, identity authentication, ticketing, data exchange, anti-counterfeiting, advertisement and other functions, and is a new type of service in the field of mobile communication. Near-field communication service enhances the function of cell phone, makes the user’s consumption behavior gradually go electronic, and establishes a new type of user consumption and business mode.

The application of NFC technology has received widespread attention worldwide, and different players such as domestic and foreign telecom operators and cell phone manufacturers have carried out application pilots, and some international associations and organizations have been actively engaged in standardization work. According to industry-related organizations, cell phone applications based on NFC technology will become the next killer application for mobile value-added services.

The working principle of NFC:

NFC is a short-range, high-frequency radio technology, the NFCIP-1 standard stipulates that the communication distance of NFC is less than 10 centimeters, the operating frequency is 13.56MHz, and the transmission speed has three kinds of transmission speeds, namely, 106Kbit/s, 212Kbit/s or 424Kbit/s.

The NFCIP-1 standard specifies in detail the transmission speed of NFC devices, codecs, modulation schemes, and the frame format of the RF interface, and also defines the NFC transmission protocol, which includes startup protocols and data exchange methods.

The NFC operating modes are divided into passive and active modes. In the passive mode, the NFC initiating device (also known as the master device) requires a power supply, and the master device utilizes the energy from the power supply to provide an RF field and sends the data to the NFC target device (also known as the slave device), at a rate of 106kbps, 212kbps, or 424kbps, whichever is preferred.

The slave device does not generate an RF field, so it does not need a power supply. Instead, it uses the RF field generated by the master device to convert to electrical energy, powers the slave’s circuits, receives the data sent by the master device, and uses loadmolation to send the slave’s data back to the master device at the same rate.

Because the slave device does not generate an RF field in this mode of operation, it passively receives the RF field generated by the master device, so it is called passive mode, in which the NFC master device can detect a contactless card or an NFC target device and establish a connection with it.

In active mode, both the initiating device and the target device must actively generate RF fields when sending data to each other, so it is called active mode, and they both need power supply devices to provide the energy to generate RF fields. This mode of communication is the standard mode of peer-to-peer network communication and allows for very fast connection rates.