GoKawiilHiyd launches disc sensor that clips onto existing watches for health tracking
Startup Hiyd has built a thin, 7-gram sensor disc that attaches to the back of any watch using microsuction, a textured silicone material that creates a vacuum seal without magnets or adhesive. The device tracks metrics like heart rate, heart rate variability, sleep stages, movement, calories burned, and VO2 max, syncing data to a companion iOS or Android app. Founder Salah Batroukh says the team is training its AI by filming and labeling their own activities, such as walking, jogging, and running.