Generally speaking, RFID tags will have four internal information storage spaces, which are respectively reserved, EPC (electronic product code), TID (tag identification number) and User (user). Among them, Reserved is the storage block that stores Kill Password and Access Password. Generally, it will not release permissions to any party for reading. What really works are EPC, TID and USER. What's the use of them?

RFID electronic tags have three greatest values at the retail and logistics ends. One is the storage and classification of information volume, the other is the release of reading restrictions, and the other is its indelibility.

The official name of TID is the identification number of the storage tag. You can call it the more representative name "Global Unique Code". It is this code that provides the only proof of the existence of the RFID tag. It cannot be written and modified after leaving the factory. If the tag is unique, the product attached to it must be unique, which is the principle of anti-counterfeiting.

The role of EPC is to provide factory information or original information that can be written by manufacturers. In principle, EPC can only be written by the manufacturer, and it follows a record rule, which is determined by the manufacturer itself, so this provides an absolute technical basis for the original product information record.

User is a more flexible user-defined number, which provides the possibility of retaining the write permission after the product leaves the factory. For manufacturers, because some products involve transportation or the confidentiality of product information, they need more characters to carry the product data information, and the storage capacity of EPC is limited on the one hand, and cannot be changed after delivery, so they will need to get the user number. It should be noted that not all RFID tags have the user storage capacity. In short, Each RFID tag has 4 storage blocks, but according to the type and function of RFID tags, the user storage of some tags is 0, which means that data cannot be written.

The second value is the release of reading restrictions. Barcodes need to be scanned one by one by handheld readers. The reading scenario of RFID tags can become very grand or very invisible. RFID tags support one-to-many, long-distance, non-visual recognition.

The third value is indelibility. This indelibility, in addition to the fact that most of its stored information cannot be modified and written, specifically refers to its packaging method. From the application cases and adaptation scenarios of most RFID tags, it is not an external fool's packaging combination, but is packaged into the product core, which well solves the problem of illegal elements tearing and smearing anti-counterfeiting code, so that the product information is truly embedded in the product itself, especially for traceability or anti-counterfeiting, which is more secure.

Yanzeo, as a science and technology enterprise serving all major fields around the world, has always been guided by smart technology for many years, and has been committed to the research and exploration of barcode and RFID technology. It has hundreds of independent technology patents and is a well-known manufacturer of barcode and RFID equipment. One of the business and solution providers.If you need any help about RFID, please feel free to contact us.