RFID explained without the jargon — how it works, the different types, what it costs and whether your business needs it.
RFID stands for Radio Frequency IDentification. An RFID system has two parts: a tag (a tiny chip and antenna attached to an item) and a reader (a handheld device or fixed portal). The reader sends out a radio signal; the tag picks it up and broadcasts back its unique ID number — no battery needed in most tags, no line of sight needed, and hundreds of tags can be read simultaneously from several metres away.
A barcode needs a laser or camera to "see" it — one at a time, in the right orientation. RFID uses radio waves — it can read through packaging, around corners and in bulk. Scan 500 items in a shopping bag in one second, or locate a specific tool anywhere on a construction site.
| Type | Frequency | Range | Best For |
|---|---|---|---|
| LF (Low Frequency) | 125–134 kHz | Up to 10cm | Animal tagging, access control |
| HF (High Frequency) | 13.56 MHz | Up to 1m | Library books, passports, contactless payment |
| UHF (Ultra High Frequency) | 860–960 MHz | Up to 10m | Retail inventory, warehouse, logistics |
| Active RFID | Various | 100m+ | Vehicle tracking, large asset tracking |
Our RFID specialists can advise on the right tags, readers and software for your specific use case.
