Tuesday 2 February 2021

On This Day In 1935: Leonarde Keeler, Co-Inventor of Keeler Polygraph AKA The Lie Detector Helps Get Conviction


Leonarde Keeler was a world class inventor & detective.

(c) WIRED


On This Day In 1935, Leonarde Keeler used his own invention, the Keeler Polygraph (the lie detector) on two suspected criminals who would end up being convicted in court due to the results.



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