title: Detecting touch on a 3d model imported in Unity for an AR application using Vuforia
body: <p>I have built an AR application using Unity and Vuforia. So basically when i scan something i see a model. I have removed the main camera and we are using AR camera for this purpose. </p>
  
  <p>Now on running the apk on Mobile <strong>i want to open a url or show some message on touching the 3d model which comes after scanning the image.</strong></p>
  
  <p>I know it uses Raycasting but a code snippet which can help me in opening a url on clicking 3d model would help. I am a beginner in Unity so the help would be appreciated a lot.</p>