Barcode Reader (Barcode Scanner) is an electronic device that is used to scan / read the printed barcodes and send the output to any device for example a computer or a software program. A barcode reader will translate optical impulses into electrical signals via sensing the code through a light source, lens and a light sensor. All barcode readers are equipped with decoders. Barcode scanners come in various types like Pen-type readers, Laser scanners, CCD / LED scanners, Camera based scanners, Video Camera Readers, Omnidirectional Barcode Scanners. Now a days all latest mobile phones are also equipped with barcode scanners. Barcode scanners become one of the most integral part of pharmaceutical industry in verification and authentication of genuine products.