Hand-held lie detector

Hopefully not coming to a physician's office near you soon...gee...have you faithfully taken all your medications....hmmmm...lie detector says....hmmm...no, I don't want one of those in the doctor's office any time soon...good story though and interesting technology...not as reliable as a polygraph yet...BD

FORT JACKSON, S.C. - The Pentagon will issue hand-held lie detectors this month to U.S. Army soldiers in Afghanistan, pushing to the battlefront a century-old debate over the accuracy of the polygraph.
The Defense Department says the portable device isn't perfect, but is accurate enough to save American lives by screening local police officers, interpreters and allied forces for access to U.S. military bases, and by helping narrow the list of suspects after a roadside bombing. The device has already been tried in Iraq and is expected to be deployed there as well. “We're not promising perfection — we've been very careful in that,” said Donald Krapohl, special assistant to the director at the Defense Academy for Credibility Assessment, the midwife for the new device. “What we are promising is that, if it's properly used, it will improve over what they are currently doing.”
It also gauges cardiovascular activity, though with a pulse oximeter clipped to a fingertip, rather than a polygraph's arm cuff, which has the advantage of measuring both pulse rate and blood pressure. Unlike the polygraph, the PCASS does not measure changes in the rate of breathing, and it has no way to detect countermeasures, or efforts to fool the machine, such as by making unusual movements.