Prevent image file from being opened

[css-quest]

I've noticed on some websites, if you get the direct link of an image and paste it into the browser location bar, it redirects to the homepage or a 404 page instead of showing the image.

Anyone know if this is easy to do or does it require a lot of scripting?

I'd assume it could be done via .htaccess somehow??

Thanks in advance.

[monkey186]

Do you mean to prevent image hot-linking? Here is some information: http://www.alistapart.com/articles/hotlinking/