A barcode scanner, also known as a barcode reader, is an electronic device that decodes and physically captures information contained in barcodes. It consists of the following components, which work together to collect the data contained in a printed barcode:
Light source: Illuminates the barcode for proper reading.
Lens: Scans the barcode image.
Photo conductor: Translates optical impulses into electrical ones.
Decoder: Analyses the data and sends the content to the scanner's output port. A decoder can be internal or external.
After capturing an image, barcode scanners link to a host computer to pass along the scanned information. This automates the data collection process so organizations can reduce human error and expedite tasks such as tracking inventory, managing assets, and monitoring point-of-sale transactions.
There are three primary barcode scan engines, which decode or read a barcode:
Laser: Uses a laser to read linear or one-dimensional (1D) barcodes. See which laser scanners System ID sells.
Linear Imager: Reads linear barcodes by capturing an image of the barcode. See which linear imagers System ID sells.
2D Area Imager: Reads linear and 2D barcodes by capturing an image of the barcode. See which 2D area imagers System ID sells.
Sometimes referred to as form factors, barcode scanners are categorized in the following types, which have features unique to specific environments, applications, and industries: