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
On the other hand, their are routinely used in classified agencies for some tasks.
So maybe ,even with this error rate, we could see reduction at trafficking , at some risk of loss for freedom of profession. Maybe the benefits are big and the disadvantages are quite small(depending on error rates, etc) ? Maybe it's a worthwhile tradeoff ?
So no, it's not a worthwhile tradeoff, because it's hardly better than rolling dice.
Nothing wrong with your reasoning, many people on HN stupidly enough think that the downvote button is for when you disagree with a comment.
It won't be perfect, but maybe it can reduce trafficking ?
EDIT: please down just downvote, explain what's wrong with my line of reasoning ?