While regular polygraphs are not reliable, I think usage for P300(i.e. brain fingerprinting) is more reliable, and even used in some courts.
for some numbers ,see[1]- "With both P300 and P300-MERMER, error rate was 0 %: determinations were 100 % accurate, no false negatives or false positives; also no indeterminates. Countermeasures had no effect. Median statistical confidence for determinations was 99.9 % with P300-MERMER and 99.6 % with P300"
So maybe this could be a good starting point for something useful for trafficking prevention ?
for some numbers ,see[1]- "With both P300 and P300-MERMER, error rate was 0 %: determinations were 100 % accurate, no false negatives or false positives; also no indeterminates. Countermeasures had no effect. Median statistical confidence for determinations was 99.9 % with P300-MERMER and 99.6 % with P300"
So maybe this could be a good starting point for something useful for trafficking prevention ?
[1]http://link.springer.com/article/10.1007/s11571-012-9230-0