What is RFID? ...

From PNNL News and Publications ...

... "Radio-frequency tags have been used by industry for nearly 20 years. Common uses include identification of rail cars, automobiles and salmon returning to spawn in the Columbia River, as well as embedding these tiny tags under the skin of a pet to identify a lost cat or dog. Many people still encounter RF tags when a store sales clerk removes theft-deterring devices off expensive clothing. What is RFID? A unique method of identifying items from a distance is called RFID, or radio frequency identification. These RFID systems use small 'tags' that contain information about the object to which it is attached. " ...