As a demonstration of the possible, using an image is in the category of Minimum Viable Product, the more sophisticated product would of necessity be an APP th

As a demonstration of the possible, using an image is in the category of Minimum Viable Product, the more sophisticated product would of necessity be an APP that hooked into the existing API and would only show a valid payment code if the Conditions Of Use were met. This could be a web-app or it could be a native one.