RF Tags Feature ...

Office of Science - Feature ...

... "The RF tags are wireless communication devices that range in size from a grain of rice to a credit card and can be designed to identify, locate, or monitor items. The system consists of two-parts inexpensive tags and the monitors that detect the reflected energy they shoot back. The tags are already used to track rail cars, automobiles, and tiny versions can be imbedded in pets to help reunite lost animals with their owners." ...