Relatively Problem Free
This is in some contrast to pallet and case tagging where consumer goods companies are required by retailers to fit the tags regardless of economics. The consumer goods companies are therefore reluctant purchasers of RFID and these tag and interrogator prices are in free fall from oversupply. The RFID tag and interrogator suppliers involved typically lose money. Here we are talking about Far Field UHF tags, which work well enough on pallets, cases and air baggage under US radio regulations but are only relatively trouble free elsewhere in applications with very low reader density, shortish range and dry, non-metallic environments. That means retail apparel in the UK and Japan and books in bookshops in the Netherlands, for example. The problems elsewhere are because, as yet, few countries outside the US permit adequate UHF power levels, bandwidth and signalling protocols for RFID. By contrast, HF is the most popular frequency for item level tagging and, with well over one billion such tags delivered, it encounters few remaining technical problems. So called Near Field UHF is a promising alternative that may give lower costs when proven in high volume applications.
- People:
- Peter Harrop