A barcode scanner is an electronic device that reads printed barcodes, decrypts the data from the barcode, and sends the data to a centralized network i.e. a computer. It is provided with a light source, a lens, and an optical sensor to convert optical signals into electrical signals. Barcode scanners also contain a decoder circuit that can review the barcode image data given by the sensor and send that data to the output port of the scanner. Two-dimensional barcode scanners are the most popular commodity in the global barcode scanner market along with laser scanners and CCD devices. Barcode scanners are used by retailers and manufacturers around the globe for the record-keeping of manufacturing and delivery dates, product costs, etc.
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