title: What is the best way to check for credentials in wcf service?
body: <p>I need to write a WCF Service which takes one input parameter and based on this input parameter,there will be a business logic and it returns a true or false.</p>
  
  <p>Now to have authorization to use this service,i need to check for credentials also.</p>
  
  <p>What is best approach to check for credentials and allow him to access my service.</p>
  
  <p>Can we do anything in headers ?</p>