RFID (Radio-Frequency Identification)

RFID (Radio-Frequency Identification) identifies tagged objects or credentials using radio waves. A solution combines tags, readers, antennas and software, and may operate at low, high or ultra-high frequency with different range, speed and material behaviour. Passive tags draw energy from the reader; active tags contain a power source and can support longer range. RFID can improve access, inventory and traceability, but a detected tag does not prove the identity or location of an item without suitable process controls. Metals, liquids, orientation and interference affect reads. Security also varies: identifiers may be copied or observed unless the selected technology supports appropriate authentication and encryption. A pilot should test representative tags, environments, collision rates, exceptions, integration and reconciliation with the system of record.