Vendor Gets Close To RFID Chip That Can't Be Cloned

Can an RFID chip be made uncloneable? No, but one Palo Alto vendor is arguing that it's gotten quite close.

The vendor's position, according to this well-done NetworkWorld story, is to "create multiple PKI-like key pairs based on integrated circuit impurities so that a given chip will always respond to a particular stimulus in a predictable way. And, because it's the impurities in the silicon that cause this effect, it's impossible to create a chip that will respond to a specific stimulus." For one possible future of RFID, it's worth a read.