QR code scanner is a kind of reader which can read an QR encoded image and supply the information embedded with it. Now it becomes an usual fact that you get some qr image on your PC or in a web page. Because these types of images are now available all around.Yes! You can put your smartphone before your PC monitor and can take a scan of a qr image, It's okay. Though you can do that more easily and quickly. By using a scanner software on your PC. Or you may not have any smartphone too. But the fact is that you have to extract or decode that qr codes, which means you need to see the information inside the image.
