The relationship between NFC and RFID in the field of Internet of Things, RFID is the first half of the life of NFC

There are three key technologies in IoT, namely, connectivity, data manipulation, and labeling. We have already introduced a lot of aspects related to connectivity and data manipulation, so today we are going to talk about “marking” technology, in fact, marking is the first step in the application of the Internet of Things. So what is the marking technology?

Internet of Things identification technology is mainly RFID and NFC wireless technology, the beginning of identification technology on behalf of RFID later with the expansion of the industry and extended NFC technology, the two technologies in the Internet of Things to play a huge role in the identification of the two technologies, today, we through this article, to talk in detail about the relationship between RFID and NFC?

RFID technology introduction
RFID is also called non-contact radio frequency identification is also essentially a wireless communication technology, is through the wireless electromagnetic waves to transmit data, RFID and other communication technologies are not the same place is its use, not for texting, or phone calls, its main purpose is to identify and track objects bound to the label, so as to achieve the control of the object.

RFID communication method
RFID technology is widely used in warehousing and logistics, for the identification and tracking of goods, RFID realization principle: the use of the system label (Tag) to identify objects. In addition to the tag, RFID system there is a two-way wireless transceiver, the main role of this transceiver is like the tag to send signals, and will read the tag information for feedback.

NFC technology is widely used in the field of payment, etc.
Introduction of NFC technology
NFC communication technology is near-field communication technology, currently in a variety of smart phones NFC is a very common communication interface, it exchanges data by connecting smart devices near each other, NFC devices can also communicate with a passive NFC tags, this communication method is the same as RFID.

Introduction to NFC communication principle
NFC communication method
NFC technology is evolved from RFID technology, and the NFC standard also specifies the communication protocol, data exchange format. Usually combined with an inductive reader, point-to-point function and inductive card function on the NFC chip, it can identify, connect and interact with data with compatible devices within a short distance.
What are the differences between RFID and NFC
1, communication distance
RFID types are different, the distance can be recognized is not the same, such as RFID access card, recognition distance and NFC, as well as near-field communication. ETC this application scenario recognition distance is relatively long requirements of several meters or even dozens of meters or even hundreds of meters.
NFC is known as near-field communication, communication distance is very close, generally within 1 meter.
2, working frequency band
NFC can be understood as a subset of RFID technology, used in the 13.56MHz band above, but RFID also includes other frequency bands, usually RFID has a lot of working frequency bands, high-frequency band 13.56MHz, low-frequency band of 125KHz, microwave band of 2.45KHz, there are ultra-high-frequency band of 915MHz, 433.92MHz and so on.

RFID application scenarios
3, application scenarios
RFID, whether active or passive, the main scope of application is the identification of objects, transportation, logistics, warehousing are widely used to RFID technology. The main work is still used for the identification of objects, logistics, transportation, warehousing are widely used RFID technology to track goods.
Payment field often use NFC technology
In general, NFC technology is based on the development of RFID technology, but RFID application scenarios, NFC and can not exist to replace the role, because now many RFID application scenarios are still very common, NFC technology is not comparable to the time being.
Although in the field of payment and proximity object recognition in the field of many scenarios can be used in the NFC technology, as of now NFC technology has not become a cell phone like Bluetooth must be the communication interface.