title: Taking over an Xcode iOS project: code sign error
body: <p>I've been asked to take over an iOS development project, and was sent the project files.<br>
  I manage to run the project on the simulator, but when I try to run it on my own iPhone, I get an error saying:  </p>
  
  <blockquote>
    <p>Code Sign error: The identity 'iPhone Developer: <em>former developer name</em> (<em>XXXXXXXXXX</em>)' doesn't match any valid certificate/private key pair in the default keychain</p>
  </blockquote>
  
  <p>How do I take over the project and run it on my own hardware?<br>
  Thanks.</p>