title: Send image to server as binary data
body: <p>I want to make an iPhone application to send an image to my server.  </p>
  
  <p>I want to draw something in iPhone (ex: a signature) as an image to POST binary image to my server (server is JSP). Please tell me what I have to do?</p>
  
  <ul>
  <li>how to use iPhone UI?</li>
  <li>how to make binary data from image, etc.</li>
  </ul>