RFID Technology
Radio-Frequency Identification (RFID) is an automatic identification method that uses radio waves to capture digital data encoded on tags or smart labels. Unlike barcodes, RFID tags do not require line-of-sight and can be read individually or in bulk, dramatically accelerating inventory accuracy, asset tracking, and process automation across the supply chain.
How is RFID used day-to-day in logistics operations?
In multi-client warehouses, for example, passive UHF portals are installed at loading bays, tunnel readers are set up on high-speed conveyor belts and mobile sleds are used for stock checks. Tag events stream into the warehouse management system (WMS) in real time, providing instant confirmation of inbound receipts, pallet movements and outbound trailer loading. Consequently, shrinkage can decrease by up to 40%, cycle-count labour can be reduced by 90%, and visibility can be improved to the item level, even for mixed-SKU pallets.
FAQ
What are the main components of an RFID system?
- Tags (transponders) - Passive, battery-assisted, or active; each stores a unique Electronic Product Code (EPC).
- Readers (interrogators) - Fixed portals, handhelds, or tunnel antennas that emit RF signals to power and query tags.
- Middleware - Filters raw read events, applies business rules, and pushes clean data into WMS/TMS/ERP platforms.
Passive vs active tags - what’s the difference?
- Passive tags harvest energy from the reader’s signal; they are inexpensive (≈ €0.05–0.40) and typical read ranges are 3–10 m.
- Active tags include a battery, transmit on their own, cost more (≈ €10–50), and reach 100 m or more—ideal for yard management or high-value equipment.
How accurate is RFID compared with barcodes?
RFID read accuracy in controlled environments can exceed 99.5 %; however, metal, liquids, and tag orientation can create blind spots. Proper antenna placement, shielding, and tag selection are critical to matching or outperforming barcode reliability.
Can RFID work alongside other IoT sensors?
Yes. Temperature or shock loggers often embed RFID chips, enabling a single scan to capture both an EPC and environmental history, which GEODIS streams into its Cold-Chain Control Tower.
What standards govern RFID in logistics?
- EPCglobal Gen2 / ISO 18000-63 – Passive UHF.
- ISO 18000-6C – Industrial supply-chain interoperability.
- ISO 18000-7 & -61 – Active and sensor tags.
What ROI can shippers expect?
Most logistics optimization projects recoup their investment within 12 to 24 months by eliminating manual scanning, reducing search times, and lowering safety-stock buffers. Industry benchmarks indicate annual savings of approximately €2 to €5 per pallet position in high-volume distribution centers.
Are there privacy or security concerns?
Business-critical tags can be locked or encrypted, and access controls restrict reader privileges. GEODIS applies AES-128 tag authentication for pharma and luxury goods programs to prevent cloning and counterfeits.