That s what is great about digital. That s the curse of digital. Its rather scary to think that stealing property in the digital age is that easy. Watermarks are being promoted as part of the answer to securing digital property rights. These new watermarks have nothing to do with water.
Digital watermarks are just that, digital.
The digital watermark is one piece of an answer to the problems faced by electronic commerce, and technology. Historically watermarks are those marks placed to provide a way to authenticate a piece of property. The marks may or may not be obvious. For instance, take the new U.S. currency, watermarks can be seen when one holds the bills up to bright light. This watermark creates a more reliable distinction between counterfeit and real U.S. paper currency.