title: losing GPS metadata while uploading picture with mobile Safari
body: <p>I have form with a input of type 'file'. The goal is for users to upload pictures from which I extract the GPS data. I have some validation on the server side to check if the metadata is present and if yes, I accept the file.</p>
  
  <p>When I upload a picture from my desktop, everything works fine.</p>
  
  <p>When I upload the same picture via mobile safari (iOS 6.1), my validation fails. </p>
  
  <p>The only explanation I can find is that safari strip the metadata from picture before uploading them but it does not make sense to me so I am open to suggestions</p>