The prime objective of this article is to discuss about wireless barcode scanner. A wireless barcode scanner also uses the similar technology as others in the use of light-sensing instrument. The light passes over patterns that are person to every product and then sends the data into the computer. These patterns are called barcodes and really include all the data which pertains to the invention. Each barcode, either vertical lines, dots, or other geometric designs, which differ in their thickness, or height are the finger prints of the product and brand and cannot be duplicated elsewhere.