Active Tagging

Active tagging refers to the use of battery-powered electronic tags to track assets, inventory, or shipments in real time. Unlike passive RFID tags — which rely on an external reader to power them — active tags broadcast their own signal continuously or at set intervals, enabling real-time location data without requiring the item to pass through a fixed reader gate.

How Active Tags Work

Active tags contain a small battery, a microprocessor, and a radio transmitter. They communicate via technologies such as:

• Active RFID (433 MHz or 915 MHz): Long read range up to 100 meters; used in large warehouses and yards
• Bluetooth Low Energy (BLE): Range of 10–30 meters; popular in indoor asset tracking for hospitals and retail
• Ultra-Wideband (UWB): Centimeter-level precision; used in manufacturing for precise tool and equipment location
• Zigbee / LoRaWAN: Low-power options suited for outdoor or campus-level tracking

The tags communicate with a network of fixed readers or anchors, which triangulate the tag's position and report it to a central software platform.

Applications in Logistics and Warehousing

Active tagging is used across several logistics-intensive environments:

• Container and yard management: Tracking trailers, containers, and rolling equipment in large yards
• Cold chain monitoring: Tags with integrated temperature sensors alert when a refrigerated shipment goes out of range
• Tool and equipment tracking: Manufacturing plants use active tags to locate expensive equipment in real time, reducing search time and theft
• High-value cargo: Pharmaceuticals, electronics, and luxury goods use active tags for continuous in-transit monitoring

Active vs. Passive Tagging

Active tagging is a key component of smart warehouse and Industry 4.0 implementations, where real-time visibility across the entire operation reduces dwell times, improves throughput, and enables predictive maintenance.