Step inside the portal and everything is white, calm, silent: this is where researchers are helping craft the future of virtual reality. I speak out loud, and my voice echoes around the empty space. In place of the clutter on the outside, each panel is unadorned, save for a series of small black spots: cameras recording your every move. There are 480 VGA cameras and 30 HD cameras, as well as 10 RGB-D depth sensors borrowed from Xbox gaming consoles. The massive collection of recording apparatus is synced together, and its collective output is combined into a single, digital file. One minute of recording amounts to 600GB of data. The hundreds of cameras record people talking, bartering, and playing games. Imagine the motion-capture systems used by Hollywood filmmakers, but on steroids. The footage it records captures a stunningly accurate three-dimensional representation of people’s bodies in motion, from the bend in an elbow to a wrinkle in your brow. The lab is trying to map the language of our bodies, the signals and social cues we send one another with our hands, posture, and gaze. It is building a database that aims to decipher the constant, unspoken communication we all use…