I can't answer OP's question, though having spent a couple of years following computer security related news, this RFID thing had me wondering some time ago, with RFID technology even being incorporated with my new credit card (my bank told me that one can choose to have the featured disabled for my credit card, whatever that might mean), making me wonder if maybe law enforcement might one day, if not already, find a way to interrogate RFID things with some kind of directed beam of sorts from a distance. Afaik, there is also a known risk of having your credit card read off, with use of RFID tech by passerbys, and so, you can get products that aim at preventing unauthorized access to your RFID enabled card (maybe best to check and test this efficiently instead of blindly trust a seller selling such things).
I am also reminded, though perhaps not even related technically, of what is said to be documented spying tools by some infamous agency, where they are known for having technology where an emitter of sorts is hidden inside your monitor's power cable, and then, from a distance, the gimmick seem to be to use some kind of emission to interrogate and read off data from your monitor cable. An interesting aspect of that again, might be how such radiation could perhaps be harmful one way or another.