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RFID means Radio Frequent IDentification and is a technology to read and write information from small RFID transponders (tags). With RFID tags you can identify products, items or people . These tags are small chips comparable with barcodes but are able to provide a Radio Frequency signal and send an identification code.
A RFID solution consists of a reader/ antenna and RFID tags. With this reader/antenna information can be written on the RFID tag (information carrier).
RFID solutions can be active or passive. Active RFID receives energy from a battery inside the RFID transponder and can be read over a long distance (up to 25 meters indoor and 50 meters outdoor). Passive transponders don’t have a battery inside and are activated by the RFID antenna.
Different RFID types also use different frequencies. In general, the higher the frequency the greater the send/receive distance. Most used frequencies are: 125KHz (Low Frequency), 13.56MHz (High Frequency), 860 <> 950 MHz (Ultra High Frequency), 2.45GHz (Microwave).
The benefit of using RFID:
- A unique code which can be tracked and traced anytime and anywhere
- No physical contact is required
- No line of sight is needed to read the tag ID
- Up to 300 tags can be read in a few seconds
- Longer reading distance is possible (up to 6 meters with passive RFID)
- Counterfeit tag information is more difficult than with a barcode
- Minimal weather and environmental effect on the reading performance
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