While reading web pages or email on the Android phone, I occasionally encounter QR codes that I need to be able to decode inline somehow, such as starting an app that will allow me to pinch a screen section containing the code. There are many apps that use the camera to scan, but I need to be able to read codes that are displayed on the device's screen, please. Does anyone know of such an app? Ideally it would have a counterpart for iPhones, Android, etc. for different message recipients to read the same code.