"The down side of that great fidelity and what makes the content providers very nervous is the ease of copying very high fidelity images. So Digital Watermarking embeds a signal in the visual signal that is imperceptible to the human eye but can be detected by a computer like chip and determine the source of the information."
And if a DVD, say, is illegally copied...
"The idea is that the standard DVD players will refuse to play back material that hasn't got the appropriate protection on it."
It may not be fool proof, says Dr. Gear, but it's a start. The NEC Research Institute...now ten years old...a couple of other nifty projects in the wings, including holographic storage, sounds like the old Superman movie....and new ways to store information on many computers at once, so that if one crashes, or a web site goes down, you can still get to the information you need.