Will and Jada Smith's son, 26, arrived on the red carpet wearing an all-black ... with many joking the hat reminded them of a 'Haunted Minecraft building.' Another fan joked he looked like ...

These devices rely on electrodes, sensors that touch the skin to pick up electrical signals from the body. Creating these electrodes isn’t as easy as it might seem. Human skin is complex.

These devices rely on electrodes, sensors that touch the skin to pick up electrical signals from the body. Creating these electrodes isn't as easy as it might seem. Human skin is complex. Its ...