Forbidding external linking?

[Neverbirth]

It seems there are people linking directly to the pictures of a friend's gallery. He'd like to avoid this, I tried using .htaccess but it even asks for the pass and username when you access to the gallery :?, I've been looking at the FAQ and I made a search over the forum, but I couldn't find anything about this issue, just about saving the pictures or watermarking them.

Is there any way to avoid external linking? Thanks in advance.

[Tranz]

You might want to search for hotlink protection. Maybe even ask your host since suggested solutions here might not be applicable to your system.

[snork13]

http://www.htmlbasix.com/disablehotlinking.shtml