Here at Artisan HD we use several ways to protect our photographers images while they are online in the gallery. First, we watermark them visually. This is a simple, effective way to protect the art. We try to make it unobtrusive as possible. Secondly, we use the PHOTOtool to host the galleries. The PHOTOtool uses several ways to prevent easily saving the images, but in the end some technical folks can hack into the browser and pull them from cache. However, by doing that they are admitting to taking the images illegally.
10/3/06 Protecting your digital images from theft – CNET Community Newsletter: Q&A Forums: “There are a number of ways to digitally sign the artwork you produce and numerous software apps that will allow you to do this.
First, you could watermark your image, this is where you put a mark somewhere on the image (usually in the background), so that if anyone tries to pinch it from your site, you’ll be able to prove that it did originate from you. To watermark something, you could do anything that will make your work obviously yours, and you can have it either obvious or hidden.”