title: Digest, Basic, and Bearer Authentication
body: <p>I recently posted a <a href="https://stackoverflow.com/questions/8458011/problems-passing-access-token-to-authenticate-with-api">problem</a> I was having with authentication, but didn't receive any replies so I thought of another way to ask the question without being redundant.  </p>
  
  <p>What I'm seeing in the applications <a href="https://gimmebar.com/api/v0#5--Use-the-access-token-to-authenticate-with-the-API-and-retrieve-user-data" rel="nofollow noreferrer">documentation</a> are three ways to pass the access token to authenticate and receive the information that I'm trying to get: HTTP <strong>Digest</strong> auth, HTTP <strong>Basic</strong> auth, and <strong>Bearer</strong> token auth.  The distinctions between these is unclear to me, and my attempts at <a href="https://gist.github.com/1455637" rel="nofollow noreferrer">Bearer token auth</a> (check out STEP 5) have not worked.</p>
  
  <p>Can someone explain what these three are and hopefully point out what I'm doing wrong?</p>