Low frequency rfid tags are used in identifying animals and identifying beer kegs for example while higher frequency tend to be used to keep track of library books and microwave tags used to control vehicles remotely 举例来说，低频率rfid标签可用以识别动物及啤酒桶，高频率标签则可在图书馆使用，以追踪书籍，而微波标签可以遥控汽车。
