http image viewable from inside page, but not direct url

Question

I do not believe this is possible, but I figure there are people out there way smarter than me, so why not check ..

I would like to have an HTTP image that is viewable from within a page when used w/in an img tag, but NOT visible if the img src link is called directly. Does that make sense? Viewable in page, but not if called directly.

Quick edit .. acceptable alternative is to embed image in page in such a way as url is not human readable / able to be extracted and typed into browser.

Update 2 ... .NET IIS7 env.

Answer 1

Frankly, I re-worked my solution so I didn't really have to worry bout it ... know that's a cop out, as it doesn't REALLY answer the question, but there it is. My concern that users would be able to defraud the "game" I was creating if they could figure out the sequence that was being used to name the images. Quick and dirty solution .... don't make image file names sequential / predictable.