> Maybe the equipment is just for show Yes, it's a con. > but who’s to say that further biometric measurements, such as functional MRI, wouldn’t significantly

> Maybe the equipment is just for show Yes, it's a con. > but who’s to say that further biometric measurements, such as functional MRI, wouldn’t significantly increase the accuracy of biometric lie detection That isn't what they're doing. The "who" that will say it is actual, statistically significant evidence that it works.