title: Check if Steam is running and user is logged in
body: <p>In a nutshell I want to check if Steam is running and the user is logged in. I could only find docu about the web-api which would be the wrong point to start I think.</p>
  
  <p>I don't even need a code example, I just need a hint to the right direction and where to start. I heard about an OpenID implementation in Steam itself but I don't have a clue if it would be the right place to start.</p>
  
  <p>Any help is appreciated!</p>