By Dr. Priyom Bose, Ph.D. Reviewed by Lauren Hardaker May 19 2026 A soft wireless chest patch could replace bulky polygraphs and sleep-lab wires by continuously tracking the body’s hidden stress signals in real-world settings, from emergency medicine training to infant sleep disorders.  Study: Wireless, skin-interfaced multimodal sensing system for continuous psychophysiological monitoring - A wearable polygraph device . Image credit: clicksdemexico/Shutterstock.com A recent  Science Advances