title: Adding a digital signature to a pdf file
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/378247/digitally-sign-pdf-files">Digitally sign PDF files</a>  </p>
  </blockquote>
  
  
  
  <p>In the application a user will upload a PDF file and then upload a personal signature created using a digital pen. How can I embed this signature in the pdf file?</p>