Function of exomech helmet from Mechanical Engineering career in DU?

My sim is already on the top of the mechanical engineering career and he's now able to create exomech suit and helmet. The suit allows the wearer to hover like servos instead of walk, but I have yet to discover the function of the helmet itself. Some sources stated that you can scan sims for their traits and emotions, but I didn't get the option to do that. Anyone who have tried it know its real function? Thanks!