Caldarale, Charles R wrote:
From: André Warnier [mailto:[email protected]]
Subject: Re: Secured photo rendering
But it should not, if the server sends the image with the appropriate
"no caching" and/or "expires" HTTP headers.
The headers don't matter, since the client has the image in hand. Browsers,
for example, allow a right-click to save the image, regardless of the caching
state.
I've seen javascript used to prevent right-clicking to save the image,
but nothing can prevent them from taking a screen shot.
Now how one would set such headers easily in Tomcat for static
documents, that I don't know.
Filters - but it won't help.
- Chuck
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