The Image can be scanned using a mobile phone with a Basic VGA Camera and above. You need to download the kaywa reader to your mobile phone (there are some models only supported nokia, sony, samsung, motorola)
- Download the Kaywa reader (either jar or sis file)
- Open the kaywa reader application
- Open the place where the qr code image is available (it may be the screen, LCD projection on the wall, newspaper,etc)
- Once the camera took the image, the reader will process the image and then decrypt the message contained inside the image.
Please look at this video for a demo on how QR Code is decoded using a mobile phone. (Phone Model is Nokia 2730)