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What is RFID?
RFID means “Radio-frequency identification” and it refers to a technology that with help of radio waves detects and identifies RFID tags on a certain distance depending on the technology.
It it a technology that we use everyday, when we go shopping we have RFID tags on clothes so they don’t get stolen. when we pay for them using contact less RFID bank card.
Types of RFID
LF – low frequency: It covers the ranges between 30 and 300 kHz. It enables reading distances up to few cm, but has slower reading capabilities.
HF – High frequency: Covers the ranges between 3 and 30 MHz. Reading distance can reach up to 1 m. Best known technology from HF is NFC that is used in bank cards and in mobile phones and it works at frequency of 13.56 MHz.
UHF – Ultra high frequency: covers the ranges between 0.3 and 3 GHz and can read the data on a distance up to 15 m. This technology is the most vulnerable to disturbances in the environment.