Creepy. This is some sort of vibrating haptic combat vest that will alert you to the state of your comrades in battle and might even be able to sense incoming enemies.
"If the unit commander has the information about which team members are walking, running, standing, prone, kneeling, and/or firing weapons, he will be able to make well informed critical decisions based on a significantly better understanding of the situation at any given time. Even with the lack of physiological monitoring, these data could indicate potential causalities (e.g., prone, no movement, not firing). Additionally, direction of enemy, ammunition depletion, and severity of enemy engagements could be ascertained."
They were also thinking about attaching something to a soldier's tongue which is even grosser. A fascinating work-around for information overload.
Set Cammos to Vibrate [DefenseTech]