title: Zxing called from a web page: open callback url in new tab/window
body: <p>I've followed <a href="https://github.com/zxing/zxing/wiki/Scanning-From-Web-Pages" rel="nofollow">these instructions</a> to scan barcodes from my web page using the app "Barcode scanner" by Zxing. After reading the code I need to pass it to the server, without leaving the original page (the actual behaviour is that callback url replaces the original page). </p>
  
  <p>How can I do that?</p>
  
  <p>That is:</p>
  
  <ol>
  <li>can Barcode Scanner open the callback url in a new tab/window?</li>
  <li>can Barcode Scanner call the server without using a tab (as in an ajax web service?)</li>
  </ol>
  
  <p>Thanks.</p>