I don't think they should even be permitted for that, it's essentially preying on society at large's poor knowledge of science to falsely present polygraphs as

I don't think they should even be permitted for that, it's essentially preying on society at large's poor knowledge of science to falsely present polygraphs as something they're not. They're in the same category of woo as dowsing rods and earthed bedsheets, I think it's unreasonable for them to be used in any official context.