1. Scanning identification: RFID identification is more accurate and the identification distance is more flexible. Penetrating barrier-free reading can be realized.
2. Storage capacity of data: The maximum capacity of RFID is several megabytes. With the development of storage carriers, the data capacity is also expanding.
3. Anti-pollution ability and durability: RFID has strong resistance to water, oil, chemicals and other substances; RFID tags store data in the chip, so they can protect it from pollution.
4. Reusable: RFID tags can add, modify and delete data stored in RFID tags repeatedly, which is convenient for updating information.
5. Miniaturization of volume and diversification of shape: RFID reading is not limited by size and shape, and the reading accuracy does not need to match the fixed size and printing quality of paper. In addition, RFID tags can be miniaturized and diversified to be applied to different products.
6. Security: RFID carries electronic information, and its data content can be protected by password, so that its content is not easy to be forged and tampered with.
Radio frequency identification (RFID) is a wireless communication technology, which can identify a specific target through radio signals and read and write related data without establishing mechanical or optical contact between the identification system and the specific target.
Radio signals transmit data from tags attached to articles through electromagnetic fields modulated into radio frequencies, thus automatically identifying and tracking articles. Some tags can get energy from the electromagnetic field emitted by the recognizer when they are identified, and do not need batteries; Other tags have their own power supply, which can actively emit radio waves (electromagnetic fields are tuned to radio frequencies). Labels contain electronically stored information that can be identified within a few meters. Unlike bar codes, radio frequency tags do not need to be in the line of sight of the recognizer, but can also be embedded in the tracked object.
Radio frequency identification technology is used in many industries. By labeling the cars produced, the factory can easily track the progress of the cars on the production line. The warehouse can track the location of drugs. Radio frequency tags can also be attached to livestock and pets to facilitate the positive identification of livestock and pets (positive identification refers to preventing several livestock from using the same identity). Radio frequency identification cards can allow employees to enter the locked building parts, and the radio frequency transponder on the car can also be used to charge for roads and parking lots.
Some radio frequency tags are attached to clothes, personal items and even implanted in human bodies. Because this kind of technology may read personal information without my permission, this kind of technology may also be afraid of infringing on personal privacy.