title: parse.com - Limiting who can sign up
body: <p>I might be missing something in the security documentation for parse.com but I don't see how to limit who can sign up to the app?</p>
  
  <p>I am making an app (html/javascript) with parse as the backend. The data will be shared amongst a team of people.</p>
  
  <p>What stops someone from using the sign up javascript <a href="https://www.parse.com/docs/js/guide#users-signing-up" rel="nofollow">code</a> to create their own account with the correct role that then gives them access to the parse database?</p>