What is an RFID/NFC tag? How is it different from ordinary physical labels?

Author:tysin Source:Admin5 Release Time::2019-03-12


Author: Taixin Source: Unknown Release Time: 2018-12-24      

The concept of label is extensive. Today, label refers to physical label. Of course, there are many kinds of tags and different styles and uses, but in general, tags are basically used to store some basic information about items, such as specifications, number of items, uses and so on.           

What is an RFID/NFC tag?            

RFID/NFC tags are also called radio frequency tags and smart tags. The RFID/NFC tag contains the RFID/NFC chip. It uses the RFID radio frequency identification as the basic technology to complete data storage, reading and other operations. The data is stored in the RFID/NFC chip. Unlike other tags, we usually do not need to see where the tag is, as long as we know where it is located. This is because the RFID/NFC tag communicates with the corresponding RFID/NFC reader device by sending and receiving a specific frequency of radio frequency (one kind of electromagnetic wave), and it is penetrating and does not need bar code tags, lasers. In that case, the label needs to be exposed so that the corresponding device can scan and read.

Structure Composition of RFID/NFC Label           

The RFID/NFC chip and the corresponding antenna are the basic components of the RFID/NFC tag. Of course, in actual use, RFID / NFC tags are often encapsulated in different packages, such as the inside of the packaging box, the inside of the bottle cap and so on.            

According to different frequency bands, RFID technology can be divided into low frequency, high frequency, ultra-high frequency and ultra-high frequency. NFC belongs to one kind of RFID, namely high frequency RFID. Following is a simple demonstration of the tag structure with the NFC (High Frequency RFID) tag chip of FlyPoly Microelectronics. As shown above, for the basic structure of the RFID/NFC tag, the NFC tag chip in the figure above accounts for a small proportion, but it is the most complex structure and the highest technological requirements. Of course, the antenna design is also very important, and it must match the chip. For example, the frequency of NFC chip is 13.56 MHz, and it follows the protocols of ISO/IEC14443A, ISO/IEC14443B and ISO/IEC 15693. The corresponding antenna design and ultra-high frequency RFID chip conforming to ISO18000 will also be different.

What are the differences between RFID/NFC tags and common tags?            

So what's the difference between RFID / NFC tags and common tags?            

Firstly, unlike common tags such as bar codes, which require one-to-one reading of data, RFID/NFC reader and writer devices can read and write one-to-many data to corresponding tags.           

Second: the penetration of radio frequency technology, RFID / NFC tags can be completely non-contact operation, do not need to expose tags for scanning.         

Third: RFID / NFC tags have low environmental requirements, can work in various harsh environments, tags are not easy to be destroyed, do not affect reading.

Fourthly, it can be used in fast moving objects because of its high accuracy, rapidity and wide range of recognition.  

Fifth: Automation and intelligence, reduce manual operation. This is also the RFID/NFC tag called smart tag, and plays an important role in intelligent construction, such as smart home, smart medical, intelligent transportation and other fields.