title: Validating user computer for website login
body: <p>Here is our scenario...</p>
  
  <p>We are developing a website with paid membership. Our client does not want our users to take one paid membership and share this details with their friends so that other can also use this website. So he wants to limit the login to the registered persons computer.</p>
  
  <p>Our client is ready to have the all users install some plugin or application after registration. Something like a video plugin for gmail video.</p>
  
  <p>Ideally we want webiste login to initiate this application so that it can cross check the MAC address or some other unique information to make sure that user is logging in from a registered computer. Please let me know if this is feasible</p>
  
  <p>Also if you have any other suggestions to achieve this goal, please let us know about that too</p>
  
  <p>Thanks in Advance</p>