StrongArm Technologies, a start-up company in Brooklyn, makes “ergo-skeletons” that look a bit like futuristic versions of the back support belts that warehouse workers often wear.Sensors embedded in the devices monitor a worker’s movements, and artificial intelligence software uses that information to suggest rest, stretching or posture changes — an automated safety coach for preventing back injuries.StrongArm, a fledgling outfit with just 20 employees, is one of a new wave of start-ups making all sorts of devices that offer a glimpse of the future for the manufacturing of high-tech hardwa
