[support] Prevent access to original images

[Peter Anderson]

Hi all,

I want to allow my users to upload photos from their digital cameras. I 
will use Image Styles to resize and watermark the photos to display in 
galleries, etc. I then want to prevent access to the original, 
full-size, non-watermarked photos; but even using a private file system 
with the directory set outside the web root folder, it seems the 
original photos are still accessible if you know (or can guess) the URL...

Is there any possible way to prevent anyone accessing the original 
photos, but allow full access to the image style derivatives?

-- 
Kind regards,
Peter Anderson.
http://panda.id.au