That is very interesting about using RFID's to identify a large amount of different instruments in one small area. I see what you mean about the lack of industry standards though. The system might be useful for library books -- they have unified numbers that refer to them (ISBN numbers). Or...maybe fruits and vegetables. The identifying codes for those are the same in most US supermarkets. Once RFID technology gets smaller, tiny chips could be inserted into common fruits and vegetables. Consuming an RFID tag wouldn't be any worse than accidentally eating the little number-label sticker on the skin of an apple. I wonder if those things pass through the digestive cycle without harm?
This stuff is being linked to the biblical concept of "the mark of the beast". I've even seen RFID tags being referred to as the "666 microchip"!