RFID (Radio Frequency Identification) is a technology that uses electromagnetic fields to automatically identify and track tags attached to objects. These tags contain electronically stored information.

Types of RFID

1. Low-Frequency (LF) RFID:

  • Frequency Range: 30 kHz to 300 kHz
  • Common Frequency: 125 kHz or 134 kHz
  • Range: Up to 10 cm
  • Applications: Access control, animal tracking

2. High-Frequency (HF) RFID:

  • Frequency Range: 3 MHz to 30 MHz
  • Common Frequency: 13.56 MHz
  • Range: Up to 1 meter
  • Applications: Payment systems, smart cards, inventory management

3. Ultra-High-Frequency (UHF) RFID:

  • Frequency Range: 300 MHz to 3 GHz
  • Common Frequency: 860-960 MHz
  • Range: Up to 12 meters
  • Applications: Supply chain management, asset tracking

4. Microwave RFID:

  • Frequency Range: Above 2.4 GHz
  • Range: Up to 2 meters
  • Applications: Toll collection, vehicle tracking

Uses of RFID

  • Supply Chain Management: Tracking goods from production to retail.
  • Asset Tracking: Monitoring and managing high-value assets.
  • Access Control: Secure entry to buildings and facilities.
  • Retail: Inventory management, anti-theft systems.
  • Healthcare: Patient and equipment tracking.
  • Transportation: Toll collection and vehicle tracking.

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