I wrote in my book Neurosphere that the war on terror was essentially a war on ourselves. The more we inter-mesh through RFID and other technologies, the more we need to proactively decide whether to war on ourselves or not.

“A typical passive RFID chip costs about a quarter, whereas one with encryption capabilities runs about $5. It’s just not cost-effective for your average office building to invest in secure chips. This leaves most RFIDs vulnerable to cloning or – if the chip has a writable memory area, as many do – data tampering. Chips that track product shipments or expensive equipment, for example, often contain pricing and item information.”

http://www.wired.com/wired/archive/14.05/rfid.html