Watermark

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Watermark

An image in a piece of paper that may be seen more clearly when it is held up to light. This is used in printing some money and passports to prevent counterfeiting. For example, if one holds a $20 American bill up to light, one would see a watermark of Andrew Jackson's face.
References in periodicals archive ?
Digital watermarks are in extensive use around the world, with billions of digitally watermarked objects in use for broadcast monitoring and copy protection.
As digital watermarks do not disrupt the images to which they are applied, this offers unlimited application and marketing possibilities, particularly with those companies that are sensitive to maintaining their brand images.
The initiative, a groundbreaking collaboration of entertainment and technology groups, including the Motion Picture Association of America (MPAA) and the Digital Watermarking Alliance (DWA), explains how digital watermarks can be used in P2P networks to provide benefits to both consumers and content owners.
driver licenses carry digital watermarking security features, and Digimarc anticipates that approximately 1 in every 2 driver licenses issued in 2007 will include digital watermarks.