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.