It really doesn&#x27;t look all that easy.  <a href="https:&#x2F;&#x2F;developer.mozilla.org&#x2F;en-US&#x2F;Persona&#x2F;Quick_Setup" rel="nofollow">https:&#x2F;&#x2F;developer.mozilla.org&#x2F;en-US&#x2F;Persona&#x2F;Quick_Setup</a><p>Especially compared with usernames and password, which is basically built in to anything already.