Lie detectors have been used to send 160 sex offenders back to prison, according to the Ministry of Justice of the United Kingdom.
Probation officers have sent paedophiles and convicted sex offenders back behind bars after raising concerns about their behavior, or the answers they gave during polygraph tests.
The Ministry of Justice (MoJ) started using lie detectors on convicted sex offenders in August 2014 and around 50 people are tested on the machines every month.
Telegraph.co.uk
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