Yes, RFID (Radio-Frequency Identification) readers can read tags from a distance, but the effective range depends on the type of RFID system being used. There are two main types of RFID systems:
Passive RFID: Passive RFID tags do not have their own power source. They are powered by the RF energy transmitted by the RFID reader. The reading distance for passive RFID tags is typically shorter, ranging from a few centimeters to several meters, depending on the frequency used.
Active RFID: Active RFID tags have their own power source (usually a battery) and can transmit signals independently. These tags generally have a longer reading range, often reaching tens of meters or more.
The reading distance also depends on factors such as the frequency of the RFID system, the power of the RFID reader, and the environment in which the system is deployed. Higher frequencies generally offer shorter ranges but provide better performance in terms of data transfer speed and accuracy. Lower frequencies, on the other hand, offer longer reading distances but at the expense of data transfer speed.
In summary,
RFID readers can read tags from a distance, and the specific reading range varies based on the type of RFID system and other environmental factors.
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