Using watermarks to preserve the integrity of printed documents dates back 2000 years. Research by a pair of Purdue University professors could bring that time-tested method into the electronic age.

Google Docs may be among the most feature-packed word processors out there, but until recently, it lacked the ability to do something as mundane as watermarking a document. That was until September ...

Digimarc and Jura JSP, providers of machine-readable digital security features designed to authenticate ID documents, say they are developing interoperable digital watermark inspection software for ...