RFID tag reader refers to a RFID reader or writer that can read various RFID tags. RFID passive tags divide into low frequency tags, high frequency tags and ultra-high frequency tags. Then the RFID tag readers naturally divide into low frequency tag reader, high frequency tag reader and ultra-high frequency tag reader. Different tag reader correspond to different label types. Reading distance, encryption type and other performance are also different.
The read distance of low frequency tags reader is generally between five millimeters and twenty centimeters. LF tags are cheap and less prone to breakage. But the security encryption is poor. However, general company access control punch cards and other fields do not require high security and encryption.
The confidentiality of high-frequency tag is very good, they can use high-level encryption technology, and the read and write distances are often very close. The reading distance is not good, you don’t want your bank card to be stolen, do you? High-frequency tags reader generally have a reading distance of one or two centimeters. And the NFC tag we are familiar with, Near Field Communication, is a kind of near-field read-write protocol tag in popular terms. They also belong to the category of high frequency tags.
What about UHF tags reader? Their individual distances can reach 2 to 8 meters or more. UHF tags can be used in areas such as asset management and inventory counts. In addition to encryption, batch reading and writing is also a major feature of UHF tags. It is thanks to the ultra-high frequency reading and writing technology that it is possible to register thousands of goods in one second.
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