title: SecItemCopyMatching returns -25300
body: <p>I have the following codesnippet in my app. </p>
  
  <pre><code>    CFTypeRef result = nil;
      OSStatus userPresenceStatus = SecItemCopyMatching((__bridge CFDictionaryRef)query, &amp;result);
  </code></pre>
  
  <p>SecItemCopyMatching returns -25300. It happens on some iPhone 6 devices but not on every device. What does this code mean ? What can be the cause ?</p>
  
  <p>Thanks for your advice
  Frank</p>