This is quite fascinating at first glance, but if this does become a viable method for law enforcement to use, the worry is that a 82% or 83% or 89% confidence

This is quite fascinating at first glance, but if this does become a viable method for law enforcement to use, the worry is that a 82% or 83% or 89% confidence score still gives in to a huge doubt. Actions taken on this basis could be uncalled for. If the justice system gets accustomed to it and relies on such confidence levels without looking for additional corroborating evidence, it would be disastrous.