My Google alert found me an article about a food traceability system combining RFID and Topic Maps.
The system is for Spanish ham from the Teruel province (which is supposed to be excellent, and has a Denomination of Origin status):
Free Traceability Management Using RFID and Topic Maps
The article is from ECIME 2010 (the 4th European Conference on Information Management and Evaluation), but I have not found any info besides conference program and abstract.
According to the conference website "The proceedings of the above conference are now available to purchase in CD-ROM format only".
However interesting, - I'm not that keen on spending £50 to get a CD-ROM in the mail.
Open Access publishing is the way, that's for sure...