How big are RFID transponders?

RFID transponders range in size from the size of a grain of pepper to the size of a brick. The size depends on whether the tag uses a battery to broadcast a signal or simply reflects a signal back from the reader. The other factor is the size of the antenna. As the...

Can tags be reactivated?

EPCglobal, the nonprofit organization that is developing standards for the use of EPC technology, has stipulated that all EPC tags should have a feature that enables them to be rendered permanently inoperably by the kill command. This is to prevent anyone from...

Can RFID tags be hidden in consumer products?

RFID tags can be read through non-metallic packaging so they can be embedded in products and product packaging. However, it’s unlikely that companies would try to hide tags in their products, since these would be easy to discover. A consumer could use a reader...