Inexpensive with less employee implementation.
Barcode: Set of symbols used to represent alpha-numeric information.
Date back to 1960, used first in identify rail road cars.
In 1970 to identify grocery items UPC barcodes were placed on product.
Instead of manually typing a product identification number into a database, if the information is contained in a barcode, a data entry operator may scan it in. This would increase automation and reduce human error.