TagSense
http://www.tagsense.com

With 16 years' experience in radio frequency identification, TagSense designs and licenses custom RFID components and systems covering passive, active and chipless RFID technologies. The company's applications include mobile phones, smart cabinets and biosensor medical devices. In 2006, TagSense unveiled its Nano-UHF reader-writer module, which it claims is the world's smallest such device. And in 2008, it launched the ZT series of active RFID sensors, based on the IEEE 802.15.4 standard.