The Magic of RFID

Slashdot had a reference to this primer on RFID. For those that do not know, RFID is a method to place a tag on something and have an external scanner read it. The most interesting thing about the technology is how the device itself does not have a battery. it absorbs radio frequency (RF) energy and that powers its internal transmitter to allow it to send back its IDentification. Get it? This is the basic concept behind things like EZ Pass, and my license plate system idea (See earlier entry). How long before we plant one of these in every driver's license. Long live the Fourth Amendment!!!

The Magic of RFID