="#Usage">Usage</a></li>
<li><a href="#SampleApp">Running the Sample app</a></li>
<li><a href="#SampleBackend">Running the sample backend</a></li>
<li><a href="#UsingSampleApp">Using the sample app</a></li>
<li><a href="#Errors">Errors</a></li>
<li><a href="#UpdatePushToken">Update factor&rsquo;s push token</a></li>
<li><a href="#DeleteFactor">Delete a factor</a></li>
</ul>

<p><a name='About'></a></p>
<h2 id='about' class='heading'>About</h2>

<p>Twilio Verify Push SDK helps you verify users by adding a lo