Abstract: A unique bar code-encoded identification is designed to be read in large number by a bar code scanner simultaneously or in continuous motion. The unique identification, known as Gentag ID, allows a specific product item to be tracked. In one implementation, that product identification is encoded using code 128 bar code, or another bar code language. In one implementation, the product identification is formed by a combination of multiple characters under the encoding scheme. In one application, a product item with the product identification is placed on a display rack among other product items having like product identification. The product identification may be provided on a surface of the product item at a preferred position, such that all of the product identifications of the products on the display rack may be read by an electronic scanner at the same time or in a continuous motion.