QR Mobile barcodes Relatively new and very convenient way for the mobile users to access mobile content instantly. What are they? QR (quick response) code is a mobile phone readable barcode used to get mobile content. Simply activate your barcode scanner on your smartphones, point and click. The barcode scanner utilizes the camera on your mobile phone to scan barcodes that are seen in magazines, newspapers, billboards, packaging, business cards and websites. Read more.