[shmageggy]

Human eyewitness relates to an event. "Did you see this person on the night of January 14" etc. Phrenology is based on immutable characteristics of a person's physiology. Predicting criminality based on any immutable feature seems categorically wrong to me. If facial and voice recognition are used in relation to specific events, that's one thing, but using them to predict some sort of innate propensity for doing crime sounds like pure bathwater.