title: How to use QR Code to open AppStore or deep link an app?
body: <p>I'm currently developing an app that uses QR code to identify products. Here are the use cases:</p>
  
  <ol>
  <li>If user hasn't installed the app, scanning the QR code should take them to AppStore / PlayStore to download the app.</li>
  <li>If the app is installed, the user can use the app's scanner. In this case it'll extract the info (JSON format) from the QR code.</li>
  </ol>
  
  <p>I'm not sure if QR code can achieve this. I know the first requirement needs a link to the AppStore. The 2nd requirement is just plain old JSON data. I don't know how to combine them into one QR code. Is this possible? </p>
  
  <p>Thanks!</p>