This reminds me of ADE_651, fake bomb detector, except the part of someone going to jail for fraud:
"It was widely used in the Middle East, and may have led to numerous deadly bombings in Iraq due to its inability to detect explosives. Its inventor, James McCormick, was sentenced to 10 years in prison in 2013 for fraud. "
"It was widely used in the Middle East, and may have led to numerous deadly bombings in Iraq due to its inability to detect explosives. Its inventor, James McCormick, was sentenced to 10 years in prison in 2013 for fraud. "
https://en.wikipedia.org/wiki/ADE_651