20 May '13, 6pm

IT Hiccups of the Week: Lie Detector Lies?

IT Hiccups of the Week: Lie Detector Lies?

However, polygraphers using the LX4000 noticed years ago that the measurements of sweat could vary widely between the machine’s manual and automatic modes—which could change the outcome of a polygraph test, the story says. Lafayette was notified by polygraphers at the Air Force’s Office of Special Investigations in 2002, the LX4000's first year on the market, that there was something wrong with the results generated when the machine was in “automatic” mode. On receiving the news, the company apparently told the Air Force that the LX4000 should only be used in manual mode; however, for some unexplained reason, the company did not bother to inform other customers of the problem. Indeed, a training manual from the time still told customers to use the automatic mode.

Full article: http://spectrum.ieee.org/riskfactor/computing/it/it-hiccu...

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