title: Open button on keyboard immediately sends form
body: <p>I have a form like this:</p>
  
  <pre><code>&lt;form action="form_send.php" method="post"&gt;
  &lt;table&gt;
          &lt;tr&gt;
              &lt;td&gt;&lt;label for="address"&gt;address&lt;/label&gt;&lt;/td&gt;
              &lt;td&gt;&lt;input type="text" id="address" name="address" tabindex="1" /&gt;&lt;/td&gt;
          &lt;/tr&gt;
          &lt;tr&gt;
              &lt;td&gt;&lt;label for="country"&gt;country&lt;/label&gt;&lt;/td&gt;
              &lt;td&gt;&lt;input type="text" id="country" name="country" tabindex="2" /&gt;&lt;/td&gt;
          &lt;/tr&gt;
          &lt;tr&gt;
  &lt;/table&gt;
  &lt;input type="submit" value="Submit" tabindex="3" /&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>If the user opens Safari or other browser on his/her smartphone and fills out the text fields, he has the possibility to click on <code>Open</code>. If this button is pressed the form is immediately sent.</p>
  
  <p>Is there a possibility that the user first jumps to the second text field before he can submit the form?</p>
  
  <p>I tried to use <code>tabindex</code> but that doesn't helped me. I know I can make fields mandatory with PHP/Javascript, but the fields shouldn't be mandatory.</p>