Commenter follow_the_ money had the following to say on my June 24th post about a  JAMA article raising questions about the safety of RFID in hospitals (reprinted from comment section): 
“this appears to be waiting for a good reporter
The “TNO Netherlands Organization for Applied Scientific Research, Leiden” is listed as one of the “Author Affiliations” for the RFID study (http://jama.ama-assn.org/cgi/content/short/299/24/2884).
A recent announcement (May 2008) was made regarding strengthened collaboration between TNO and Sintef, another research organization in Europe similar to TNO (http://www.mwjournal.com/search/article.asp?HH_ID=AR_5758&SearchWord=TNO) .
Wilfred Booij is a senior scientist at Sintef.
Wilfred Booij is also CTO of “Sonitor Technologies”.
What does Sonitor Technologies do? …read more

I was slightly disappointed to see the news that RFID chips may potentially be harmful to patients with pacemakers and other medical devices. RFID (radio frequency identification) chips/”tags” can be embedded into anything from expensive medications to IV infusion pumps to aid in preventing counterfeiting of drugs or supplies or just to help the hospital track inventory, so nurses aren’t standing around wondering where a piece of equipment is when it was left on another floor. RFID chips have also been pioneered as an addition to regular patient ID bracelets.
It’s important to note that the study (abstract from JAMA here, …read more