Yes, RFID (Radio Frequency Identification) technology can be read from a distance, but the effective range depends on several factors, including the type of RFID system being used:
1. Low-Frequency (LF) RFID:
Typically operates at frequencies around 125 kHz. The read range for LF RFID is generally very short, often within a few centimeters to about a meter.
2. High-Frequency (HF) RFID:
Operates at 13.56 MHz and has a read range of about 10 cm to 1 meter. This type is commonly used for applications like access control and NFC (Near Field Communication).
3. Ultra-High Frequency (UHF) RFID:
Operates between 860 MHz and 960 MHz. UHF RFID can have a read range from a few meters up to 12 meters or more, depending on the power of the reader, the gain of the antennas, and environmental factors.
4. Active RFID:
Uses battery-powered tags that can communicate over greater distances (up to 100 meters or more) compared to
passive RFID tags, which do not have their own power source and rely on energy from the reader.
In summary, while RFID can be read from a distance, the specific capabilities depend on the frequency and type of RFID system in use.
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