There are some interesting passive tags around that are very cheap or should I say cheaper?. You have an interrogator walk in to the room and it tells you everything in the room. Ok this means you have to do some work, but linked up to an equipment library person doing the rounds, they can look in cupboards and do a thorough search in a few seconds at the doorway.
Totally active tags are expensive and large and it is the small items that go missing. So in a way they are not appropriate unless you want to monitor the where-abouts of your anaesthetic machines.
Robert
