Speaking of NFC, many friends should be very familiar with it. Now more and more mobile phones support this function. The most widely used one is undoubtedly the public transportation card access card. When taking the bus and subway, as long as the NFC function of the mobile phone is used, the physical card can be simulated to swipe the mobile phone.

Recently, the NFC Forum announced the technology upgrade roadmap for NFC. According to reports, the new version of NFC can not only realize the air swipe, but also bring more possibilities for the improvement of wireless charging power. Take a look, the new version of NFC brings what new upgrade!

01 contact range extended to 30mm, usability improved

the NFC Forum said that one of the main priorities of NFC technology is to increase the scope of use. At present, the minimum contact range of NFC technology is 5mm and the maximum contact range is 20mm. The latest information on the official website of the NFC Forum shows that the new version of NFC will increase the contact range to 30-40mm in the future, that is to say, the minimum use range of NFC will be expanded from 5mm to 6 times to 30mm.

source: NFC Forum

the increase in contact range means that the availability and compatibility of NFC will be greatly improved. The user no longer needs to close the mobile phone to the NFC terminal, and only needs to approach a certain distance to complete the transaction, which reduces the accuracy requirement of the NFC antenna and accelerates the speed of operations such as card swiping and mobile payment. Also won't because the phone shell is too thick and can't swipe the trouble.

NFC Forum Executive Director McCamon explained this:

"The idea is that when your phone touches or is close to the payment terminal, the connection can start faster and then the transaction can be completed. And you don't have to be that precise. All of us have had this experience, picking up the phone, moving around, trying to find the right best position on the terminal. As the range increases, you don't have to worry about it."

02 power increased to 3W, for smart wearable devices wireless charging

in addition to the expansion of the contact range, the power of NFC charging will increase from 1W to 3W.

Although the power is still very small, it is much more than the previous power application scenarios. 3W of power is enough to be used in smart wearable devices such as smart bracelet watches, TWS headphones, AR glasses, etc.

Qi wireless charging is based on the principle of electromagnetic induction for power transmission, and a geometric antenna with huge size needs to be installed in the device. Therefore, it cannot be used for small devices with low power consumption requirements.

The biggest advantage of NFC charging is that the system size requirements are very low, and bendable flexible antenna PCB can be used, thus solving the problem that many small IoT devices cannot support wireless charging due to limited internal space.

At that time, smart phones that support NFC function can be used as backup power supply to charge other wearable devices that support NFC and have insufficient power, such as smart bracelet watches, TWS headphones, AR glasses, etc. The endurance and convenience of the smart wearable device are greatly improved.

03 NFC functions more than card, charging

NFC technology is a short-range wireless communication technology, which does not require cumbersome authentication and pairing mechanisms in the process of connection and data transmission, and is faster and more convenient than Bluetooth and WiFi.

Therefore, NFC technology can not only swipe cards and wireless charging, it can also be used in smart homes and hardware ecosystems.

Xiaomi has previously introduced "NFC Touch Paste", which links the NFC tag written with the instruction with Mijia Smart Home. Only the mobile phone needs to be close to the NFC tag to automatically respond to the instruction, access WiFi, set up household appliances, lights, music, etc.

source: millet

although NFC touch can simplify some complicated operation steps, it also has some restrictions on use. For example, it requires the user to set up the intelligent scene in advance, and stick the touch paste on the appropriate position, and can not be pasted repeatedly. Moreover, it can only be triggered when the mobile phone is close to the bumper. If it is far away or there is no mobile phone around, it cannot be used.

Huawei's "one touch" function also uses NFC technology and WLAN technology. Touch the Huawei sharing sensing area on the computer with the NFC area of the mobile phone to realize rapid identification and connection between devices, and then realize high-speed data exchange through WLAN technology, quickly transmit files such as pictures and videos, and realize efficient office and learning across devices.

04 Conclusion

in the future, with the development of the Internet of Things, NFC technology will be further integrated into all aspects of our daily lives. It is conceivable that our home devices, cars, offices, etc. will be equipped with NFC capabilities, and the connection and interaction between devices can be realized through simple touch or proximity. This will greatly facilitate our lives, improve work efficiency, but also bring more innovation and possibilities.

In general, NFC technology, as a fast and convenient short-range wireless communication technology, is not only widely used in the field of access control and payment, but also plays an important role in wireless charging, smart home, hardware ecology and so on. With the advancement of technology and the continuous expansion of application scenarios, NFC technology is bound to continue to play an important role in the future and bring us a more intelligent and convenient life experience.