add debugging features being blocked to requirements

static/faq.html

@@ -334,6 +334,8 @@
                         <li>Reset attack mitigation for firmware-based boot modes such as fastboot
                         mode zeroing memory left over from the OS and delaying opening up attack
                         surface such as USB functionality until that's completed</li>
+                        <li>Debugging features such as JTAG or serial debugging must be inaccessible
+                        while the device is locked</li>
                     </ul>
 
                     <p>In order to support a device, the appropriate resources also need to be available