title: Native login with Instagram API
body: <p>I've been working on an app for IG, and was looking at other websites which use the IG API. I came across <a href="http://www.instaliker.net/" rel="nofollow">this</a> website which allows the user to login by entering their username and password directly into the site. It is then able to access the IG API and fetch things like follower count, however without the user authenticating an IG API Client as would normally be required. The app can even perform functions such as liking pictures using your account, which as far as I know also requires you to authenticate an app with elevated privileges.</p>
  
  <p>My question is, how is this app able to login users without using OAUTH which <a href="http://instagram.com/developer/authentication/" rel="nofollow">appears to be the only method of authentication</a>?</p>