Our used barcode scanners run low energy lasers to read the barcodes. A mobile mirror is used to move the beam rapidly back and forth. The information is processed by a barcode reader and then sent through the data communication interface. Used barcode scanners can read and output printed barcodes to a computer. Like a flatbed scanner, it consits of a light source, a lens and a light sensor translating optical impulses into electronic ones. Additionally, nearly all barcode readers contatin decoder circuitry analyzing the barcodes image data provided by the sensor and sending barcode's content to the scanners output port.