TechGalaxy Watch 8 Antioxidant Index: The 5-Second Thumb Scan Is Actually Measuring Carotenoids
Samsung's Galaxy Watch 8 comes with a new Antioxidant Index feature—press your thumb on the back sensor for five seconds and get a score from 0 to 100. But what it's actually measuring isn't antioxidants themselves, it's the concentration of carotenoids in your skin.
