RFID stands for Radio Frequency Identification. It is a way of storing and retrieving data from RFID Tags, which are little things that can be used in all sorts of things. Basically, you have a receiver that picks up a RFID tag in the area and can tell you where it is, what it is, what information it has... Whatever it has been programmed to do.
Mastercard is planning on rolling out 4 million credit cards that have RFID tags built in so you no longer have to swipe your card. But, the store you shop at has to have the thing that can scan it. What about ecommerce? What about hackers? I personally think anything based on radio frequencies is pretty simplistic.
RFID tags are used in such items as: anti-theft tags in stores, school kids and even humans. My vote? BAD IDEA!
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