File under: technologies you’ve heard about, but aren’t sure what the possibilities are.
Radio Frequency Identifier (RFID) has been around since the 60s. If you work at a large office building you probably have an RFID key card with you all the time. If you commute through a toll booth you might have an RFID transponder on your dashboard that broadcasts a radio signal to the receiver at the toll booth. And you know that piece of metal you have to cut out of your Gap clothing or peel off your DVD purchase? That’s an RFID transponder that sends a one-way signal to an in-store security system, saying “hey, I’m here and I’m active.”
The RFID system is made up of a receiver and a transponder....