According to Wired, a new nanotube-based ink allows RFID tags to be printed directly onto packaging materials. The end result would be that no bar-code scanning, just wheel a cart of gorceries through the exit, and you’re good. Plus, if your credit card is RFID enabled, then you could, in principle, have your account debited at the same time! No human interaction required at all. Pretty sweet. I can’t wait to see what the Fringe has to say about this.