Public bathhouses in Korea are iconic cultural spaces, yet accidents caused by extreme temperature shifts, slippery floors, and prolonged heat exposure result in a fatality rate nearly five times higher than traffic accidents. Samsung Safe Keyintegrates Galaxy Watch biometric technology into the traditional locker key band to monitor heart rate, movement, and bathing time, triggering instant alerts and rescue support when abnormalities occur — turning a simple key into a life-saving safety wearable.