I have a mobile qr code scanner application. I want to match the information in the scanned QR code from the REST API (matching in json) and print it on the screen. Can I do these operations? I would like to get information from people who are knowledgeable about this subject, through which stages I can do the subject. (You can also post a link to an article or article related to the subject.). I may have expressed myself wrong as I am not very knowledgeable about the subject.