title: Correct way to track users and logout app
body: <p>I am trying to code a native app with <code>social logins</code> as you can see the below image.</p>
  
  <p><img src="https://i.stack.imgur.com/EV5Rj.png" alt="enter image description here"></p>
  
  <p>Now I'm able to authenticate users from my <code>FirstActivity</code> and sending the <code>authenticated users</code> to next <code>SecondActivity</code>.</p>
  
  <p>Here comes my issue.</p>
  
  <p>I have a single <code>logout</code> button on my <code>SecondActivity</code></p>
  
  <p>Now how do I know which <code>account</code> user <code>clicked</code> and how do I make them logout ?</p>
  
  <p>Any suggestions are most welcome.</p>