title: Difference between hcitool scan and inq
body: <p>Looking at the hcitool command on linux, what is the technical difference between </p>
  
  <pre><code>hcitool scan 
  </code></pre>
  
  <p>and </p>
  
  <pre><code>hcitool inq
  </code></pre>
  
  <p>I understand in bluetooth the remote devices respond to an inquiry from the local device (Inquiry scan mode). What is a "scan" from the local device though, and how does it differ from an inquiry?</p>