Bar codes are used by a number of manufacturers and retailers. These are manually scanned and read individually. In case of RFID tags, it includes a tiny object which is like adhesive sticker and is included in the product. These tags works better since more data can be stored in the micro chip of RFID. These tags can detect the container that lacks barcode system.
Low frequency tags are used for detection of the animal, automobile key and many others. High frequency tags are used for bookstore tracking, controlling building access, library books etc. You may search for the RFID chip timing Minneapolis Minnesota to get more information.