In the Project Guidance tab there is a wonderful thread (AWOL locked it just when it was getting fun), by some fellow who wanted to use an Arduino to generate jamming signals around 100MHz. It is a real fun read.
Anyway, in a discussion of various things that the FCC could and couldn't regulate, this guy brings up RFID tags. The response by a knowledgable member was that RFID tags operated in an unrestricted Freq. band.
My understanding is that the FCC pretty much only cares about emmisions, and I thought that RFID tags did not emit anything, they just caused resonance or disturbance in a detecting field (something like beat freq in a metal detector). I know I'm old and feable,but Did I miss something in how the tagd work?