What are QR Codes | QR Codes Explained

Quick response codes – or QR codes as they are more commonly known are descendants of the more familiar and humble bar codes that still get scanned at supermarket checkouts. Those barcodes store information in a pattern of vertical stripes. A barcode reader scans a beam of light from side to side detecting the change in reflected light as it goes and interprets this pattern as a series of numbers. Traditional barcodes are simple and effective but they can represent only a few digits.