There is a fascinating article in Science News about how scientists are investigating ways to identify individuals based on the rhythm of their keystrokes when they type and their individual patterns of using a mouse. This research goes beyond, but is complemented by, research in text analysis that can sometimes identify authorship of a piece of text when a large body of text is available for comparison.

• Digital Fingerprints by Julie J. Rehmeyer, Science News, Vol. 171, No. 2, Jan. 13, 2007, p. 26.

As people type messages on their computer keyboards and browse Web sites, they leave a trail of electronic fingerprints. Scientists are investigating those keystroke and mouse-use patterns to develop methods to strengthen security and reduce online fraud.

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