RFID
Also: Radio Frequency Identification, RFID-Tag, RFID-Transponder, RFID-Chip, RFID-Label, RFID-Etikett
AI-generated
RFID (Radio Frequency Identification) is a technology for contactless, automatic identification of objects using radio waves. A reader retrieves data from a transponder attached to the object — without line of sight and, in many cases, simultaneously from multiple tags.
Key facts
- RFID enables contactless and simultaneous identification of multiple objects via radio, with no line of sight required between the tag and reader.
- Passive UHF tags are today the most widely used variant in intralogistics, achieving typical read ranges of 1–10 metres.
- Metal surfaces and liquids can attenuate or reflect the radio signal — tag selection and antenna positioning are therefore critical to process performance.
- RFID reduces manual scanning effort at goods receipt, during inventory counts and in picking, but requires careful integration with the WMS.
What is RFID?
RFID stands for Radio Frequency Identification and refers to a method by which objects are automatically identified via electronic transponders (known as tags) attached to them. Communication between the tag and the reader occurs via radio, meaning neither line of sight nor manual scanning is required. Tags can be passive (no internal power supply; energy drawn from the reader field) or active (battery-powered, longer range). Typical frequency ranges are LF (125 kHz), HF (13.56 MHz) and UHF (860–960 MHz) — the choice affects range, susceptibility to interference and cost.
How does RFID work in warehouse operations?
In warehouse and logistics environments, RFID tags are attached to containers, pallets, cartons or individual items. Readers — installed at fixed positions at goods receipt and dispatch, or mounted on industrial trucks — capture the transponders and pass the identification data directly to the WMS or ERP. This enables automation of several processes:
- Goods receipt without manually scanning every individual barcode
- Real-time location tracking of load carriers and containers
- Pick verification and pick confirmation without handheld scanners
- Inventory counts via walkthrough or automated drone/vehicle solutions
Compared to barcodes, RFID enables simultaneous reading of many tags (bulk reading) and works even when tags are concealed or dirty. However, UHF tags are sensitive to metal surfaces and liquids — in such cases, specialist on-metal tags or adapted antenna concepts are required.
What should you consider when selecting a solution?
Before implementing RFID, you should clarify the following points: Which frequency suits your environment (metal, moisture, required range)? Should tags be write-once or rewritable? How will the system integrate with your WMS and what middleware is needed? Tag volume also plays a role: at very high volumes, the higher initial costs compared to barcode labels are recovered more quickly, while at low volumes the investment may not be justified. Interoperability is also relevant — standards such as GS1 EPC/RFID facilitate data exchange with suppliers and trading partners, but are not universally adopted. Privacy and security aspects (e.g. unauthorized reading) should be assessed depending on the industry.
Related terms
- AKL
An Automated Small Parts Warehouse (AKL) is a fully mechanized storage system for bins, trays, or cartons that automates the goods-to-person process using aisle-captive storage and retrieval machines or shuttles.
- Automatisierung
Automation refers to the use of technologies and systems to execute processes fully or partially without human intervention. In intralogistics, the spectrum ranges from simple conveyor systems to fully automated high-bay warehouses with autonomous vehicles.
- Barcode
A barcode is a machine-readable optical code that represents information as a pattern of bars and spaces or as a two-dimensional matrix. It enables the automatic identification of items, load carriers, and documents along the entire supply chain.
- Barcodescanner
A barcode scanner is an optical reading device that captures printed barcodes and converts them into machine-readable data. It is used in intralogistics for the seamless identification of goods, load carriers, and storage locations.
- Beleglose Kommissionierung
Paperless picking refers to the assembly of orders in the warehouse without paper pick lists, where all instructions are transmitted digitally via terminals, displays, voice, or optical signals.
- Bestandsführung
Inventory management refers to the system-supported administration and continuous updating of all warehouse and material stocks within a company. It forms the basis for planning, procurement and accounting – and ensures that the book inventory and physical inventory are in agreement at all times.
- Chaotische Lagerhaltung
Chaotic storage is a warehousing principle in which items are not stored in fixed, pre-assigned locations, but are instead dynamically placed in any available, suitable slot in the warehouse. A warehouse management system handles the control and tracking of all storage locations.
- Chargenrückverfolgung
Batch traceability refers to the complete and uninterrupted trackability of products and materials along the supply chain based on their batch assignment. It enables companies to quickly identify and selectively block all affected quantities in the event of a quality issue or recall.
- Data Matrix
Data Matrix is a two-dimensional barcode that stores significantly more information in a very small area than conventional 1D barcodes. Thanks to integrated error correction, it remains reliably readable even when partially damaged or soiled.
- Datenfunkterminal
A data radio terminal is a mobile device for wireless data capture and transmission in the warehouse, combining a display, input, and scanner in one unit. It typically communicates with a warehouse management system via Wi-Fi and supports processes such as goods receipt, picking, and inventory counting.