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RFID: principle of operation, application, advantages and disadvantages


What is RFID?

RFID (Radio Frequency Identification) – a method of automatic identification of objects through radio signals. In its minimum composition, the system of identifying objects using RFID technology consists of RFID tags, RFID readers with antennas and the host computer. RFID label consists of 2 parts - chip for storing and processing information and an antenna for receiving and transmitting data. RFID reader provides the ability to receive and process data from RFID tags and write data to RFID tag. All produced / recorded data can be automatically transferred to the server.

The scope of

RFID system can be effectively used in various fields. Among them, industrial automation, control of authenticity of objects, inventory of fixed assets and goods, monitor the supply chain for logistics companies, the management of business processes in the retail industry. Not less effective RFID can be used in the medical field, libraries, access control systems and loyalty systems.

Advantages and disadvantages

Such a broad and heterogeneous application of RFID technology due to a number of advantages. The most important of them is the absence of the need of direct visibility of the object being read. Thanks to this label can be read through packaging that makes it possible for concealed storage and provides additional security. Another important advantage is support RFID terminal reading several labels, so, for example, the modern terminals industrial grade can read over a thousand RFID tags / sec. Among others, but no less important benefits – the ability to overwrite information higher compared to the barcode, data storage capacity, greater performance life, resistance to environmental influences. All this together ensures accuracy and ease of inventory, full control over the product, faster customer service and, as a consequence, increase their loyalty. We should not forget about strengthening the image of the enterprise, due to the relative novelty of RFID technology.

rfid_86198However, despite all advantages there are some drawbacks. Among them, the complexity of the production of the labels and their high price compared to the more traditional barcode, the complexity of using RFID tags on metal and "allometrically" surfaces, distrust of RFID technology users, which is associated with the theoretical possibility of using RFID to collect information about people. At the same time, none of these shortcomings is not absolute. Thus, expensive technologies guarantee a higher level of protection of objects, for placing marks on metal and "allometrically" surfaces there are special body tags that allows to achieve removal of the antenna with the chip from the metal surface at a sufficient distance for confident reading. As for the "psychological" lack associated with distrust of RFID technology users, it is obvious that this is a private issue, irrelevant for a number of applications of RFID, for example, to monitor the movement of trolleys for the mining operations.

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