macosxhints - Embed copyright notices into JPEG images

"Digital Cameras embed several types of data inside the images you take, including camera manufacturer, date the picture was taken, and aperture, shutter speed, and focal length settings. These are called EXIF tags and are also called "metadata." Here's how to take advantage of these tags to embed your own copyright notice."...

One of these days I may have a use for this. Hence the 'bookmark'.