Answer:
There are a variety of barcode readers available, including:
Pen wands: Pen wands are handheld devices that are used to scan barcodes by dragging them across the barcode.
Laser scanners: Laser scanners emit a beam of light that is reflected off the barcode and decoded by the scanner.
Image scanners: Image scanners use a camera to capture an image of the barcode and then decode the information.