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With today's multimedia world that includes TV, the Internet, video games, and portable media devices, it has become increasingly difficult for parents to keep tabs on the content their children are exposed to.  But one group believes it has found a solution: digital watermarking.

The Digital Watermarking Alliance has released a white paper. “Ensuring Child Safety in a Digital World: A Comprehensive Solution to Parental Controlled Viewing Across Devices and Platforms.” But just what is digital watermarking? The Alliance explains in its paper:

"Digital watermarking is an imperceptible content identification technology, whereby a digital code is embedded into all forms of content...like a traditional watermark on paper or currency, which is applied during manufacture...the embedded code in a digital watermark persists with the content through manipulation, copying and format conversions, and as it migrates to various platforms...The embedded code is imperceptible to consumers of the content but easily detectable by deviced equipped with a reader application."

The DWA believes that there are five attributes that an effective content-blocking solution should possess and that digital watermarking successfully embraces them across all media platforms.

To learn more about the Digital Watermarking Alliance, visit their web site, www.digitalwatermarkingalliance.org. The white paper can be downloaded through their web site or here.