‘RFID’ Fabrics contain an undetectable tracking chemical

CNET is running a story about a new way of tracking things:

"Why attach an RFID chip to a shirt when you can identify the shirt through undetectable, invisible chemicals mixed into the fibers?…

[CrossID] has devised a way to put a chemical signature into fabrics, labels, inks, boxes and other materials. When a hand or door scanner tuned to a specific frequency is pointed at an item, chemicals mixed inside the item get excited and give off a signal. The signal, which differs with the addition or subtraction of different substances, then serves as an ID for the item."

Related posts:

1. IBM patent application: human RFID tracking
2. RFID chips under your skin
3. RFID passports arriving; kidnappers, theives and terrorists smile in anticipation
4. Tracking your children with RFID chips
5. 300 humans to be implanted with radio tracking chips