The Advantages And Disadvantages Of RFID Technology

RFID technology is the most important part of microelectronics technology, information technology, automatic identification technology and Internet of things technology. It belongs to a kind of automatic identification technology. Its core component is micro electronic tags. Most of the components are millimeter sized. Through wireless electromagnetic waves several centimeters to several meters apart in space, information stored in chips is read or exchanged. It belongs to contactless communication identification, The technology uses the spatial coupling of usually alternating magnetic fields or electric fields to achieve contactless communication without human intervention, and is suitable for working in a variety of complex environments.

 

Advantages of RFID:

1. Quick scanning, RFID recognizer can recognize and read multiple RFID tags simultaneously! 2. Small size, diverse shapes, RFID is not limited by size and shape in reading, and there is no need to match the fixed size and printing quality of the paper for reading accuracy. In addition, RFID tags can be developed into miniaturization and diverse forms to be applied to different products.

3. The carrier of traditional barcodes is paper, which is prone to contamination. However, RFID has strong resistance to substances such as water, oil, and chemicals. In addition, due to the fact that barcodes are attached to plastic bags or outer packaging cartons, they are particularly susceptible to breakage; RFID tags store data in the chip, thus preventing contamination.

4. Reusable, the current barcode cannot be changed after printing, while RFID tags can repeatedly add, modify, and delete data stored in RFID labels, facilitating information updates.

5. Penetration and barrier free reading, RFID can penetrate non-metallic or non-transparent materials such as paper, wood, and plastic when covered, and can conduct penetrating communication. The barcode scanner must be able to read the barcode at close range and without any obstacles. 6. The memory capacity of data is large, with one-dimensional barcodes having a capacity of 50 bytes, two-dimensional barcodes having a maximum capacity of 2 to 3000 characters, and RFID having a maximum capacity of several Megabytes. With the development of memory carriers, there is also a trend of continuous expansion of data capacity. The amount of information required for future items to carry will continue to increase, and the demand for expanding the capacity of labels will also correspondingly increase.

7. Security, as RFID carries electronic information, its data content can be protected by passwords, making it less likely to be forged or altered. RFID has attracted much attention due to its characteristics such as long-distance reading and high storage capacity. It can not only help a company significantly improve the efficiency of goods and information management, but also connect sales and manufacturing enterprises, so as to more accurately receive feedback information, control demand information, and optimize the entire supply chain.

 

Shortcomings of RFID:

1. The cost of RFID is too high, coupled with high equipment costs such as RFID transmitters, readers, encoders, and antennas.

2. Involving privacy issues. Possible leakage of national security information/secrets.

3. Once the RFID tag approaches the reader, it will unconditionally automatically send a message and cannot confirm whether the RFID reader is legal. For example, in people's daily life items, the owner of the item (such as clothing) may not be able to detect that the item has pre embedded electronic tags and may be scanned, located, and tracked uncontrollably, which will inevitably infringe on personal privacy issues. The key to violating personal privacy lies in the basic function of RFID tags: the identification (ID) or identification code of any tag can be scanned remotely, and the tag automatically and indiscriminately responds to the reader's instructions and transmits the stored information to the reader.

4. Objects or environments containing metals and moisture can have an impact on RFID.

5. The frequency open frequency bands vary among countries, and there are still consistency issues.

 

In summary, RFID technology has many advantages and disadvantages. Enterprises should fully consider its characteristics and advantages when using and managing RFID systems, and plan and layout reasonably. Although RFID technology has certain costs and security risks, through proper use and management, its advantages can be maximized, improving the efficiency and competitiveness of enterprises. At the same time, RFID technology has broad application prospects and will become an important technology for connecting items with the Internet in the era of the Internet of Things.